CN115510704A

CN115510704A - Cladding tube blasting simulation method, device, equipment, storage medium and product

Info

Publication number: CN115510704A
Application number: CN202211179160.8A
Authority: CN
Inventors: 张明; 许多挺; 厉井钢
Original assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Current assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2022-12-23
Also published as: WO2024066178A1

Abstract

The application relates to a method, a device, equipment, a storage medium and a product for simulating explosion of a cladding tube. The method comprises the following steps: acquiring the parameters of a boosting blasting experiment of the cladding tube; applying a pressure load to the virtual model corresponding to the cladding pipe according to the boosting blasting experiment parameters, and performing a cladding pipe blasting simulation experiment to generate boosting blasting simulation parameters; and analyzing the boosting blasting simulation parameters to generate a boosting blasting simulation result. According to the scheme, the virtual experiment method for the real boosting blasting experiment is used for replacing the real boosting blasting experiment, various working conditions of the real boosting blasting experiment are simulated through corresponding various boosting blasting experiment parameters, and waste of a large number of experiments performed in the real boosting blasting experiment to the cladding tube material is avoided. The cost of the boosting blasting experiment is reduced, and the economy of the boosting blasting experiment is improved.

Description

Cladding tube blasting simulation method, device, equipment, storage medium and product

Technical Field

The application relates to the technical field of nuclear engineering reactor fuel rod cladding experiments, in particular to a cladding tube blasting simulation method, device, equipment, storage medium and product.

Background

With the development of nuclear engineering reactor fuel rod cladding experiment technology, generally, reactivity induced accidents are simulated through a rapid pressure-boosting blasting test, and the influence of different pressure-boosting rates on the pressure bearing capacity of alternative cladding is considered in the rapid pressure-boosting blasting test, so that cladding materials with potential application capacity are screened out, and the method has a certain reference value for the prediction of the subsequent reactor-entering thermal-mechanical behavior. The rapid stamping blasting test is generally carried out in a high-temperature furnace, one end of a test sample piece is sealed, and the other end of the test sample piece is connected with a stamping device by being placed in a uniform temperature zone of the high-temperature furnace. And after the temperature in the high-temperature furnace reaches the preset temperature, pre-stamping the stamping device, and opening the pressure release valve under the condition of ensuring the uniform temperature of the whole sample piece to realize the rapid stamping blasting of the sample piece so as to finally obtain a pressure-time curve. After the test is completed, other parameters of the cladding, such as elongation, etc., may be measured to characterize the toughness of the cladding.

In the conventional technology, when blasting experiments are performed on cladding tubes, the experiments are performed on the cladding tubes made of different materials under the combined conditions of different temperatures and different pressure rise rates, so that the working conditions required by the cladding tubes made of different materials are more. Furthermore, in the process of blasting experiments on the cladding tube, a large number of cladding tubes need to be adopted, and the cladding tube is damaged after each blasting experiment and cannot be recycled, so that the serious waste of resources is caused.

Disclosure of Invention

In view of the above, there is a need to provide a method, an apparatus, a computer device, a computer readable storage medium, and a computer program product for simulating explosion of a cladding tube, which can improve the economy of a real boost explosion test.

In a first aspect, the present application provides a cladding tube blasting simulation method. The method comprises the following steps:

acquiring the parameters of a boosting blasting experiment of the cladding tube;

applying a pressure load to the virtual model corresponding to the cladding pipe according to the boosting blasting experiment parameters, and performing a cladding pipe blasting simulation experiment to generate boosting blasting simulation parameters;

and analyzing the boosting blasting simulation parameters to generate a boosting blasting simulation result.

In one embodiment, the virtual model comprises a finite element model; the method further comprises the following steps:

acquiring geometric parameters and material parameters of the cladding tube;

establishing a geometric model of the cladding tube according to the geometric parameters and the material parameters of the cladding tube;

and carrying out meshing on the geometric model of the cladding tube by adopting a finite element calculation method to obtain a finite element model after meshing, and taking the finite element model after meshing as a virtual model corresponding to the cladding tube.

In one embodiment, the pressure-boosting blasting experiment parameters comprise experiment temperature, pressure-boosting rate and preset constraint conditions; the preset constraint conditions comprise the maximum deformation quantity of the inner wall and the outer wall of the cladding tube and the maximum pressure load of the inner wall of the cladding tube;

applying a pressure load to the virtual model corresponding to the cladding pipe according to the boosting blasting experiment parameters, performing a cladding pipe blasting simulation experiment, and generating boosting blasting simulation parameters, wherein the boosting blasting simulation parameters comprise:

applying a preset pressure load to the inner wall of the virtual model corresponding to the cladding tube at the experiment temperature to generate a boosting blasting simulation parameter of the cladding tube under the preset pressure load; the boosting blasting simulation parameters comprise the deformation quantity of the inner wall of the cladding tube, the deformation quantity of the outer wall and the stress value of each grid of the cladding tube;

under the conditions that the deformation quantity of the inner wall and the deformation quantity of the outer wall of the cladding tube are smaller than the maximum deformation quantity and the pressure load of the inner wall of the cladding tube is smaller than the maximum pressure load, judging whether the cladding tube is broken or not according to the stress value of each grid of the cladding tube;

if not, adjusting the preset pressure load according to the boosting rate to obtain the adjusted preset pressure load, taking the adjusted preset pressure load as a new preset pressure load, circularly executing the step of applying the preset pressure load to the inner wall of the virtual model corresponding to the cladding tube to generate the boosting blasting simulation parameters of the cladding tube under the preset pressure load, and outputting the boosting blasting simulation parameters of the cladding tube under a plurality of preset pressure loads until the rupture phenomenon of the cladding tube is determined according to the stress values of all grids of the cladding tube in the boosting blasting simulation parameters.

In one embodiment, the determining whether the cladding tube is broken according to the stress value of each grid of the cladding tube includes:

judging whether the cladding tube generates a yield phenomenon according to the stress value of each grid of the cladding tube;

if not, calculating a first deformation quantity of the inner wall and a first deformation quantity of the outer wall of the cladding tube; the first deformation amount comprises an elastic deformation amount;

if so, calculating a second deformation of the inner wall and a second deformation of the outer wall of the cladding tube, and judging whether the cladding tube has a fracture phenomenon; the second deformation amount comprises an elastic deformation amount and a plastic deformation amount.

In one embodiment, the preset constraint further includes a yield point of the cladding tube; judging whether the cladding tube generates a yield phenomenon according to the stress value of each grid of the cladding tube, wherein the judging step comprises the following steps:

comparing the stress value of each grid of the cladding tube with the magnitude relation of the yield point of the cladding tube;

and judging whether the cladding tube generates a yield phenomenon or not based on the size relation.

In one embodiment, the pressure-increasing blasting simulation result comprises the pressure-resisting time and the section elongation of the cladding tube; analyzing the boosting blasting simulation parameters to generate a boosting blasting simulation result, comprising:

calculating a first corresponding relation between a plurality of preset pressure loads and deformation quantities of the outer wall of the cladding tube under the plurality of preset pressure loads according to the deformation quantities of the outer wall of the cladding tube under the plurality of preset pressure loads;

acquiring the application time of a plurality of preset pressure loads, and calculating a second corresponding relation between the application time of the plurality of preset pressure loads and the deformation amount of the outer wall of the cladding tube under the plurality of preset pressure loads;

and calculating the pressure-resistant time and the section elongation of the cladding tube according to the first corresponding relation and the second corresponding relation.

In a second aspect, the application also provides a cladding tube blasting simulation device. The device comprises:

the acquisition module is used for acquiring the boosting blasting experiment parameters of the cladding tube;

the analysis module is used for applying pressure load to the virtual model corresponding to the cladding tube according to the boosting blasting experiment parameters, carrying out a cladding tube blasting simulation experiment and generating boosting blasting simulation parameters;

and the output module analyzes the boosting blasting simulation parameters to generate a boosting blasting simulation result.

In a third aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor implementing the following steps when executing the computer program:

In a fourth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:

obtaining the parameters of a boosting blasting experiment of the cladding tube;

In a fifth aspect, the present application further provides a computer program product. The computer program product comprising a computer program which when executed by a processor performs the steps of:

According to the method, the device, the equipment, the storage medium and the product for simulating the explosion of the cladding tube, the boosting explosion experiment parameters of the cladding tube are obtained, the finite element model of the cladding tube is established according to the boosting explosion experiment parameters, the boosting explosion experiment is simulated by applying pressure load to the finite element model of the cladding tube, and a boosting explosion simulation result is generated to represent the toughness of the cladding tube. The traditional boosting blasting test needs to test the cladding tubes made of different materials under the combined conditions of different temperatures and different boosting rates, so that the working conditions needed by the cladding tubes made of different materials are more. Furthermore, in the process of blasting experiments on the cladding tube, a large number of cladding tubes are needed, and the cladding tube is damaged after each blasting experiment and cannot be recycled, so that the serious waste of resources is caused. According to the scheme, firstly, the boosting blasting test parameters of the selected cladding tube material are obtained, and one working condition in a real boosting blasting test is simulated through the selected boosting blasting test parameters; carrying out a blasting simulation experiment on a virtual model established by the selected cladding tube to generate blasting simulation parameters; and analyzing and processing the generated blasting simulation parameters to generate a boosting blasting simulation result, wherein the boosting blasting simulation result can be used for representing the high-temperature and high-pressure resistance of the selected cladding tube material. The virtual experiment method for the real boosting blasting experiment is replaced by the virtual experiment method, various working conditions of the real boosting blasting experiment are simulated through corresponding boosting blasting experiment parameters, waste of a large number of real boosting blasting experiments on the cladding tube materials is avoided, the cost of the boosting blasting experiment is reduced, and the economy of the boosting blasting experiment is improved.

Drawings

FIG. 1 is a diagram of an exemplary application of a method for simulating cladding tube blasting;

FIG. 2 is a schematic flow chart diagram of a method for simulating cladding tube blasting in one embodiment;

FIG. 3 is a schematic flow chart of a cladding tube blasting simulation method according to another embodiment;

FIG. 4 is a schematic diagram of finite element meshing for a cladding tube blasting simulation method in another embodiment;

FIG. 5 is a schematic flow chart illustrating a method for simulating cladding tube blasting according to another embodiment;

FIG. 6 is a schematic flow chart diagram of a cladding tube blasting simulation method in another embodiment;

FIG. 7 is a schematic flow chart illustrating a cladding tube blasting simulation method according to another embodiment;

FIG. 8 is a schematic diagram of a deformation versus time curve of a cladding tube blasting simulation method in another embodiment;

FIG. 9 is a schematic diagram of an equivalent stress cloud of a cladding tube blasting simulation method in another embodiment;

FIG. 10 is a schematic flow chart diagram of a cladding tube blasting simulation method in another embodiment;

FIG. 11 is a schematic flow chart diagram of a cladding tube blasting simulation method in another embodiment;

FIG. 12 is a block diagram showing the construction of a cladding tube blasting simulation apparatus according to an embodiment;

FIG. 13 is a diagram illustrating an internal structure of a computer device according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The method for simulating explosion of the cladding tube provided by the embodiment of the application can be applied to an application environment as shown in fig. 1, wherein the application environment comprises a computer device 120, and the computer device 120 can obtain parameters of a boosting explosion experiment of the cladding tube; applying a pressure load to the virtual model corresponding to the cladding tube according to the boosting blasting experiment parameters, and performing a cladding tube blasting simulation experiment to generate boosting blasting simulation parameters; and analyzing the boosting blasting simulation parameters to generate a boosting blasting simulation result. The computer device 120 may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, internet of things devices, and portable wearable devices. The computer device 120 may also be implemented as a stand-alone server or as a server cluster of multiple servers.

In one embodiment, as shown in fig. 2, there is provided a cladding tube blasting simulation method, which is illustrated by applying the method to the computer apparatus in fig. 1, and includes the following steps:

and S220, obtaining the pressure boosting blasting experiment parameters of the cladding tube.

The reactivity introduction accident of the cladding tube can be simulated through a pressure boosting blasting test, and the pressure bearing capacity of the cladding tube made of different materials can be investigated. The reactivity introduction accident is the condition that the reactor power is increased sharply and the inner part of the cladding tube is pressurized instantaneously until the cladding tube is broken due to the positive and negative reactivity introduced by the accident of the nuclear reactor under various working conditions.

The cladding tube is used in the technical field of nuclear engineering, materials in a nuclear reactor are fissile materials, and the fissile materials are made into metal, metal alloy, oxide, carbide and other forms to serve as fuel of the reactor. To prevent such fission products from escaping, the fuel is typically enveloped in a cladding. The cladding tube contains the fission products and prevents the fuel from reacting with external coolant by direct contact. The cladding tube generally works in a high-temperature and high-pressure environment and needs to continuously bear increasing stress, and the stress comes from the pressure and the thermal stress of external coolant on one hand; on the other hand from internal stresses caused by internal fuel fission, etc. Therefore, the requirements for cladding tube materials in nuclear engineering are very high.

Specifically, the boosting explosion test parameters refer to test parameters involved in the process of performing the boosting explosion test on the cladding tube. For example, the boost burst test parameters include at least one of temperature-related parameters, humidity-related parameters, pressure-applied to the cladding tube, and the like, which are selected according to a simulation experiment, and the present application does not limit the parameters.

When carrying out the blasting experiment that steps up to the cladding pipe, all need all carry out the experiment under the blasting test parameter that steps up of difference to the cladding pipe of different materials, and the cladding pipe of different materials all corresponds an experimental operating mode under the blasting test parameter that steps up of difference, consequently, when carrying out the blasting experiment that steps up to the cladding pipe, the required experimental operating mode of cladding pipe to different materials is more.

In order to simulate the boosting blasting test of the cladding tubes made of different materials under different experimental working conditions, the boosting blasting test parameters of the cladding tubes under different experimental working conditions need to be obtained. Specifically, the boosting blasting experiment parameters of the cladding tube in the simulated boosting blasting experiment can be set based on the boosting blasting experiment parameters in the real boosting blasting experiment of the cladding tube.

S240, applying pressure load to the virtual model corresponding to the cladding pipe according to the boosting blasting experiment parameters, performing a cladding pipe blasting simulation experiment, and generating boosting blasting simulation parameters.

Specifically, the applied pressure load is set according to different boosting blasting experiment parameters under the simulated experiment working condition, and meanwhile, the service condition and the performance of the cladding tube material to be measured need to be considered when the applied pressure load is set. For example, the pressure load applied to the virtual model corresponding to the cladding tube may be set based on at least one of a temperature-related parameter, a humidity-related parameter, an irradiation-related parameter, a pressure applied to the cladding tube, and the like involved in performing the pressure-rising explosion test.

The virtual model corresponding to the cladding tube may be a 3D virtual model established based on shape parameters, material parameters, performance parameters, and the like of the real cladding tube. For example, shape parameters, material parameters and performance parameters of the real cladding tube may be acquired, and then the real cladding tube is modeled by a 3D modeling method to generate a 3D virtual model corresponding to the real cladding tube. The 3D modeling method includes any one of a voxel method and a scanning method, which is not limited in the present application.

After the virtual model corresponding to the cladding tube is established, a pressure load can be applied to the virtual model corresponding to the cladding tube according to the boosting blasting experiment parameters, and a cladding tube blasting simulation experiment is carried out. Because the virtual model corresponding to the cladding tube can generate different deformations under different pressure loads and different stresses can be generated in the virtual model, different pressure loads can be applied to the virtual model corresponding to the cladding tube according to the boosting blasting experiment parameters, and then the blasting simulation experiment on the cladding tube is realized. And in the process of carrying out the blasting simulation experiment on the cladding tube, the cladding tube can generate boosting blasting simulation parameters corresponding to different pressure loads under different pressure loads.

And S260, analyzing the boosting blasting simulation parameters to generate a boosting blasting simulation result.

Because the cladding tube can generate the boosting blasting simulation parameters corresponding to different pressure loads under different pressure loads, the boosting blasting simulation parameters corresponding to different pressure loads can be analyzed under different pressure loads to generate a boosting blasting simulation result.

Specifically, the virtual model corresponding to the cladding tube can deform differently under different pressure loads, and different stresses can be generated in the virtual model, so that the acquired boost blasting simulation parameters of the cladding tube corresponding to different pressure loads can include deformation parameters, stress parameters and the like, and then the deformation parameters, the stress parameters and the like of the cladding tube model under different pressure loads are analyzed to generate a boost blasting simulation result. At the moment, the pressure boosting blasting simulation result can be the pressure bearing performance and the like corresponding to the cladding tube model.

In the method for simulating the cladding tube blasting, firstly, the boosting blasting test parameters of the selected cladding tube material are obtained, and one working condition in a real boosting blasting test is simulated through the selected boosting blasting test parameters; carrying out blasting simulation experiment on the virtual model established by the selected cladding tube to generate blasting simulation parameters; and analyzing and processing the generated blasting simulation parameters to generate a boosting blasting simulation result, wherein the boosting blasting simulation result can be used for representing the high-temperature and high-pressure resistance of the selected cladding tube material. According to the scheme, the real boosting blasting experiment is replaced by a virtual experiment method, various working conditions of the real boosting blasting experiment are simulated through corresponding various boosting blasting experiment parameters, and waste of cladding tube materials in a large number of real boosting blasting experiments is avoided. The cost of the blasting experiment that steps up has been reduced, the economic nature of blasting experiment that steps up improves.

In one embodiment, as shown in fig. 3, there is provided a cladding tube blasting simulation method, further comprising:

and S270, acquiring the geometric parameters and the material parameters of the cladding tube.

The geometric parameters of the cladding tube comprise the tube length, the axial length, the section thickness, the outer diameter, the ovality and the like of the cladding tube; the material parameters of the cladding tube comprise material, density, elasticity parameters, plasticity parameters, creep parameters, fracture parameters and the like of the cladding tube, which are directly related to the material properties of the selected cladding tube, wherein the elasticity parameters comprise elastic modulus, poisson's ratio and the like, the plasticity parameters comprise yield strength and the like, and the fracture parameters comprise ultimate stress, ultimate strain, strain energy and the like.

Specifically, the geometric parameters of the cladding tube can be obtained by measurement, and the material parameters of the cladding tube can be directly obtained by simple experiments or by referring to a material manual.

And S280, establishing a geometric model of the cladding tube according to the geometric parameters and the material parameters of the cladding tube.

Specifically, before the simulated pressure-boosting blasting experiment is performed on the cladding tube, a geometric model corresponding to the cladding tube needs to be established. Here, a geometric model of the cladding tube can be established based on the geometric parameters and material parameters of the cladding tube. Boundary representation, constructive solid geometry, and hybrid representation may be used.

And S290, performing meshing on the geometric model of the cladding tube by adopting a finite element calculation method to obtain a finite element model after meshing, and taking the finite element model after meshing as a virtual model corresponding to the cladding tube.

After the geometric model of the cladding tube is established, the geometric model of the cladding tube is processed by adopting a finite element calculation method to generate a finite element model of the cladding tube. Specifically, first, the cell type and the material property of the geometric model are defined. The cell type may be divided into a one-dimensional cell, a two-dimensional cell, and a three-dimensional cell by dimension. The one-dimensional unit comprises a rod unit, a beam unit and the like, the two-dimensional unit comprises a shell unit, a plane unit and the like, and the three-dimensional unit comprises a solid unit, a thick shell unit and the like. In selecting the element type, the element type can be selected according to the problem to be solved by the finite element model, and specifically, a solid element can be selected as the element type of the geometric model, and the solid element has plasticity, super elasticity, large deformation capacity and the like and can be used for simulating the deformation of the elastic material. The cell type may also be selected as a cell type of the geometric model, such as a solid cell, a shell cell, a continuum shell cell, and the like. The material properties of the geometric model are defined as material parameters of the cladding tube.

And secondly, carrying out meshing on the geometric model of the cladding tube according to the unit type and the material attribute of the defined geometric model to obtain a finite element model after meshing. Specifically, the geometric model of the cladding tube can be subjected to mesh division according to the surface mesh to generate a triangular or quadrangular mesh; and obtaining a finite element model after the mesh division based on the generated triangular or quadrangular mesh. The geometrical model of the cladding tube can be divided according to the body mesh to generate a tetrahedral mesh or a hexahedral mesh, and the finite element model after the mesh division is obtained based on the generated tetrahedral mesh or hexahedral mesh.

And finally, taking the finite element model after the grid division as a virtual model corresponding to the cladding tube. Fig. 4 is a schematic structural diagram of a virtual model corresponding to the cladding tube in one embodiment. The virtual model corresponding to the cladding tube is a finite element model corresponding to the cladding tube. And the finite element model comprises a plurality of hexahedral meshes 420 obtained by meshing the geometric model of the cladding tube based on the volume mesh. The node and unit numbering rules of the grid can be input by third-party software and can also be realized by coding.

In this embodiment, the geometric parameters and the material parameters of the cladding tube are obtained, and the geometric model of the cladding tube is established according to the geometric parameters and the material parameters of the cladding tube. And carrying out mesh division on the geometric model of the cladding tube by adopting a finite element calculation method to obtain a finite element model after the mesh division, and taking the finite element model after the mesh division as a virtual model corresponding to the cladding tube. The geometric model of the cladding tube is established according to the geometric parameters and the material parameters of the cladding tube, so that the geometric structure of the cladding tube can be truly restored. The purpose of meshing complex geometric models by finite element calculation methods is to replace continuous geometric bodies with a finite number of discrete unit bodies, and finally to divide a complex geometric model into a number of simple models. Therefore, the accuracy of the obtained virtual model corresponding to the cladding tube can be improved by adopting a finite element calculation method to perform meshing on the geometric model of the cladding tube. Finally, the accuracy of a subsequent cladding tube blasting simulation experiment based on the virtual model corresponding to the cladding tube can be improved.

In an embodiment, as shown in fig. 5, in step S240, applying a pressure load to the virtual model corresponding to the cladding pipe according to the boost explosion experiment parameter, and performing a cladding pipe explosion simulation experiment to generate a boost explosion simulation parameter, includes:

s520, applying a preset pressure load to the inner wall of the virtual model corresponding to the cladding tube at the experimental temperature to generate a pressure-boosting blasting simulation parameter of the cladding tube under the preset pressure load; the boosting blasting simulation parameters comprise the deformation quantity of the inner wall of the cladding tube, the deformation quantity of the outer wall and the stress value of each grid of the cladding tube.

The deformation amount of the inner wall of the cladding tube and the deformation amount of the outer wall of the cladding tube are the variation amount of the inner diameter and the outer diameter of the cladding tube under a preset pressure load, and the stress value of each grid of the cladding tube is the value of the internal force generated by the interaction of each part in the cladding tube when the cladding tube is subjected to the pressure load.

Specifically, fixed boundary conditions are applied to the two ends of the cladding tube to simulate constraint conditions of the two ends of the cladding tube in a real pressure boosting blasting experiment, when the overall simulation experiment environment temperature reaches a set temperature, one end of the cladding tube is in a sealed state, the inner wall of the cladding tube is pressurized from the other end of the cladding tube, and pressure boosting blasting simulation parameters generated in the pressure boosting process are generated.

When the finite element solver is selected, specifically, whether the inertial force plays a leading role in the boosting blasting simulation experiment process is judged according to the correlation (namely, a pressure-time curve) between the load and the time. And if the inertia force is judged to play a leading role in the boosting blasting simulation experiment process, the boosting blasting parameters of any part in the geometric model are obtained by adopting a kinetic analysis solver. And conversely, obtaining the pressure boosting blasting parameters of any part in the geometric model by using a statics analysis solver.

S540, under the condition that the pressure load of the inner wall of the cladding tube is smaller than the maximum pressure load, judging whether the deformation quantity of the inner wall and the deformation quantity of the outer wall of the cladding tube are smaller than the maximum deformation quantity or not; if not, go to step 580, and end the blasting simulation experiment.

S560, under the condition that the deformation quantity of the inner wall and the deformation quantity of the outer wall of the cladding tube are smaller than the maximum deformation quantity and the pressure load of the inner wall of the cladding tube is smaller than the maximum pressure load, judging whether the cladding tube is broken according to the stress value of each grid of the cladding tube; if yes, go to step 580, end blasting simulation experiment;

wherein the rupture phenomenon is a rupture that occurs when the cladding tube material is subjected to a rupture strength that is a stress value at which the cladding tube material ruptures.

The stress value for judging the fracture phenomenon of the inner wall of the cladding tube can be given by referring to the fracture parameters in the parameters of the cladding tube material.

And S570, if not, adjusting the preset pressure load according to the boosting rate to obtain the adjusted preset pressure load, taking the adjusted preset pressure load as a new preset pressure load, circularly executing the step of applying the preset pressure load to the inner wall of the virtual model corresponding to the cladding tube to generate a boosting blasting simulation parameter of the cladding tube under the preset pressure load, and outputting the boosting blasting simulation parameter of the cladding tube under a plurality of preset pressure loads until the fracture phenomenon of the cladding tube is determined according to the stress value of each grid of the cladding tube in the boosting blasting simulation parameter.

Specifically, if the fracture phenomenon does not occur, the pressure applied to the inner wall of the cladding tube is continuously increased according to the boosting rate, the stress value of the cladding tube is updated, the boosting blasting simulation parameter at the moment is calculated until the fracture phenomenon occurs to the cladding tube, the calculation is finished, and the boosting blasting simulation parameter at each moment is output.

In this embodiment, a preset pressure load is applied to the inner wall of the virtual model corresponding to the cladding tube, a boosting blasting simulation parameter of the cladding tube under the preset pressure load is generated, whether the cladding tube breaks is judged according to the stress value of each grid of the cladding tube, if not, the preset pressure load is adjusted according to the boosting rate, the adjusted preset pressure load is obtained, the adjusted preset pressure load is used as a new preset pressure load, the step of applying the preset pressure load to the inner wall of the virtual model corresponding to the cladding tube and generating the boosting blasting simulation parameter of the cladding tube under the preset pressure load is executed in a circulating manner until the situation that the cladding tube breaks is determined according to the stress value of each grid of the cladding tube in the boosting blasting simulation parameter, and the boosting blasting simulation parameters of the cladding tube under a plurality of preset pressure loads are output. In the scheme, the real-time pressure-boosting blasting simulation parameters of the cladding tube, including the deformation quantity of the inner wall of the cladding tube, the deformation quantity of the outer wall and the stress value of each grid of the cladding tube, can be obtained by adopting a virtual experiment, the deformation quantity and the stress value of the cladding tube along with the change of the pressure-boosting rate can be obtained, and the capability of the cladding tube for bearing high temperature and high pressure can be conveniently analyzed.

In an embodiment, as shown in fig. 6, in step S560, determining whether the cladding tube has a fracture phenomenon according to the stress value of each grid of the cladding tube includes:

s562, judging whether the cladding tube generates a yield phenomenon according to the stress value of each grid of the cladding tube;

the yield phenomenon refers to the phenomenon that the stress exceeds the elastic limit, and the material continues to generate obvious plastic deformation under the condition that the external force is not increased any more, and the minimum stress value generating the yield phenomenon is the yield point. The yield point can be given here with reference to the yield strength in the material parameters of the cladding tube. Specifically, a finite element solver is used for judging whether the inner wall of the cladding tube generates the yield phenomenon according to the stress value of each grid of the cladding tube.

S564, if not, calculating a first deformation amount of the inner wall and a first deformation amount of the outer wall of the cladding tube; the first deformation amount comprises an elastic deformation amount;

at the moment, the deformation amount of the inner wall and the deformation amount of the outer wall of the cladding tube are first deformation amounts, wherein if the yield phenomenon does not occur, the deformation amount generated by the cladding tube only comprises elastic deformation amount, and specifically, the first deformation amounts of the inner wall and the outer wall of the cladding tube are calculated through a finite element solver.

S566, if yes, calculating a second deformation of the inner wall and a second deformation of the outer wall of the cladding tube, and judging whether the cladding tube is broken or not; the second deformation amount includes an elastic deformation amount and a plastic deformation amount.

Plastic deformation is mainly caused by creep, which is a phenomenon in which the amount of deformation increases with time. In this case, the plastic deformation is inelastic deformation, and the deformation does not return to the original shape after the external force is removed. When the yield phenomenon occurs, the deformation of the cladding tube includes not only the elastic deformation but also the plastic deformation amount due to the plastic deformation. The deformation amount of the inner wall of the cladding tube comprises an elastic deformation amount and a plastic deformation amount, the sum of the elastic deformation amount and the plastic deformation amount is a total deformation amount, at the moment, the deformation amount of the inner wall and the deformation amount of the outer wall of the cladding tube are second deformation amounts, and specifically, the second deformation amounts of the inner wall and the outer wall of the cladding tube are calculated through a finite element solver.

In the embodiment, whether the cladding tube generates the yield phenomenon is judged according to the stress value of each grid of the cladding tube; if not, calculating first deformation quantities of the inner wall and the outer wall of the cladding tube, wherein the first deformation quantities comprise elastic deformation quantities; if so, calculating a second shape variable of the inner wall and the outer wall of the cladding tube, and judging whether the cladding tube is broken or not; the second deformation amount includes an elastic deformation amount and a plastic deformation amount. The calculated first deformation and second deformation represent the deformation of the cladding tube for resisting high temperature and high pressure, and have certain reference value for predicting the thermodynamic behavior of the cladding tube after subsequent stacking.

In one embodiment, the preset constraint condition further includes a yield point of the cladding tube; s562, determining whether the cladding tube has yield according to the stress value of each grid of the cladding tube, includes:

Specifically, if the stress value of each grid of the cladding tube is smaller than the yield point of the cladding tube, the yielding phenomenon does not occur, the deformation of the cladding tube is still elastic deformation, and the elastic deformation occurs in the cladding tube; and if the stress value of each grid of the cladding tube is greater than the yield point of the cladding tube, yielding occurs, and the cladding tube is plastically deformed. Specifically, whether the cladding tube generates the yield phenomenon is judged through a finite element solver according to whether the stress value of each grid of the cladding tube exceeds the yield point.

In the embodiment, the relation between the stress value of each grid of the cladding tube and the yield point of the cladding tube is compared; and judging whether the cladding tube generates a yield phenomenon or not based on the size relation. The yield phenomenon is one of the expression forms of the material performance and has great influence on the material in practical application, so the yield judgment of the cladding tube is an important step for analyzing the subsequent material capability.

In an embodiment, as shown in fig. 7, in step S260, analyzing the pressure boost blasting simulation parameter to generate a pressure boost blasting simulation result, includes:

s262, calculating a first corresponding relation between the plurality of preset pressure loads and the deformation amount of the outer wall of the cladding tube under the plurality of preset pressure loads according to the deformation amount of the outer wall of the cladding tube under the plurality of preset pressure loads.

Specifically, a first corresponding relation between deformation quantities of the outer wall of the cladding tube is calculated through a finite element solver, and the calculated first corresponding relation between the deformation quantities of the outer wall of the cladding tube under the plurality of preset pressure loads and the plurality of preset pressure loads is expressed in a curve form.

And S264, acquiring the application time of a plurality of preset pressure loads, and calculating a second corresponding relation between the application time of the plurality of preset pressure loads and the deformation amount of the outer wall of the cladding tube under the plurality of preset pressure loads.

Specifically, a second corresponding relation between the deformation amount of the outer wall of the cladding tube is calculated through a finite element solver, and the calculated second corresponding relation between the application time of the plurality of preset pressure loads and the deformation amount of the outer wall of the cladding tube under the plurality of preset pressure loads is represented in a curve form. The deformation-time curve of the pressure-rising blasting experiment as shown in fig. 8 clearly shows the change of the deformation of the cladding tube with time.

And S266, calculating the pressure-resistant time and the section elongation of the cladding tube according to the first corresponding relation and the second corresponding relation.

The pressure resistance time of the cladding tube is the time from the application of a pressure load to the rupture of the cladding tube, the section elongation is the percentage of the initial perimeter of the cladding tube to the increased perimeter after a pressure-boosting blasting experiment, and the section elongation is an important parameter for expressing the toughness and the plastic deformation or creep deformation of the cladding tube.

Specifically, the pressure-resistant time and the section elongation of the cladding tube can be calculated by a finite element solver. An equivalent stress cloud chart in the equivalent boosting blasting simulation method process is shown in fig. 9, and the deformation of the geometric model of the cladding tube in the whole boosting blasting process can be seen.

In the embodiment, according to the deformation amount of the outer wall of the cladding tube under a plurality of preset pressure loads, a first corresponding relation between the plurality of preset pressure loads and the deformation amount of the outer wall of the cladding tube under the plurality of preset pressure loads is calculated; acquiring the application time of a plurality of preset pressure loads, and calculating a second corresponding relation between the application time of the plurality of preset pressure loads and the deformation amount of the outer wall of the cladding pipe under the plurality of preset pressure loads; and calculating the pressure-resistant time and the section elongation of the cladding tube according to the first corresponding relation and the second corresponding relation. The first corresponding relation in the boosting blasting result clearly reflects the deformation quantity increase of the cladding tube along with the increase of the applied pressure load, the second corresponding relation clearly reflects the deformation quantity change of the cladding tube at each moment, and the pressure-resistant time and the section elongation of the cladding tube both represent the capability of the cladding tube for resisting high temperature and high pressure, so that the capability of the selected cladding tube material in practical application is judged.

In a specific embodiment, as shown in fig. 10, there is provided a cladding tube burst simulation method comprising the steps of:

s1002: obtaining the parameters of the pressure boosting blasting experiment of the cladding tube, including experiment temperature, pressure boosting rate and preset constraint conditions;

s1004: and acquiring geometric parameters and material parameters of the cladding tube, defining the type of the unit and defining the property of the material. Establishing a solid model of the cladding tube according to the geometric parameters of the cladding tube;

fig. 11 is a flow chart illustrating a method for simulating cladding tube blasting according to an embodiment. Referring to fig. 10, the device corresponding to the cladding tube blasting simulation method may specifically include an input module, a pre-processing module, an analysis module, and a post-processing and output module. The input module is used for inputting geometric parameters, material parameters and boosting blasting test parameters of the cladding tube.

S1006: carrying out mesh division on the geometric model of the cladding tube by adopting a finite element calculation method to obtain a finite element model after the mesh division, and taking the finite element model after the mesh division as a virtual model corresponding to the cladding tube;

with reference to fig. 11, the preprocessing module is configured to implement a process of establishing a geometric model of the cladding tube based on the input geometric parameters and material parameters and performing mesh division. The preprocessing module is also used for reading the initial pressure load.

S1008: applying pressure load to the virtual model corresponding to the cladding tube according to the parameters of the boosting blasting experiment, and carrying out a cladding tube blasting simulation experiment;

s1010: at an experimental temperature, applying a preset pressure load to the inner wall of the virtual model corresponding to the cladding tube to generate a boosting blasting simulation parameter of the cladding tube under the preset pressure load; the pressure boosting blasting simulation parameters comprise deformation quantity of the inner wall of the cladding tube and stress value of the inner wall of the cladding tube;

s1012: under the constraint condition, judging whether the cladding tube generates a yield phenomenon according to the stress value of each grid of the cladding tube, and if not, calculating first deformation quantities of the inner wall and the outer wall of the cladding tube; the first deformation amount comprises an elastic deformation amount; if so, calculating a second shape variable of the inner wall and the outer wall of the cladding tube, and judging whether the cladding tube is broken or not; the second deformation quantity comprises an elastic deformation quantity and a plastic deformation quantity;

s1014: under constraint conditions, judging whether the cladding tube is fractured or not according to the stress values of all grids of the cladding tube, adjusting a preset pressure load according to a boosting rate to obtain an adjusted preset pressure load, taking the adjusted preset pressure load as a new preset pressure load, circularly executing the step of applying the preset pressure load to the inner wall of a virtual model corresponding to the cladding tube to generate a boosting blasting simulation parameter of the cladding tube under the preset pressure load until the fracture of the cladding tube is determined according to the stress values of all grids of the cladding tube in the boosting blasting simulation parameter;

referring to fig. 11, the analyzing module is configured to first read an initial pressure load at an initial time (t = 0), and obtain an initial amount of elastic deformation of the inner wall and the outer wall of the cladding pipe and a stress value of each grid of the cladding pipe under the initial pressure load; secondly, continuously updating the pressure load, and obtaining the deformation quantity of the inner wall and the outer wall of the cladding tube and the stress value of each grid of the cladding tube at the moment (assuming that the last updating moment is t =0, then t =0+ dt at the moment) under the pressure load updated each time; and finally, judging whether the stress value of each grid of the cladding tube reaches the yield point, if the stress value of each grid of the cladding tube reaches the yield point, determining that the cladding tube is subjected to plastic deformation, and at the moment, when the total deformation quantity of the inner wall of the cladding tube is calculated, calculating the sum of the elastic deformation quantity and the plastic deformation quantity. If the stress value of each grid of the cladding tube does not reach the yield point, determining that the cladding tube does not generate plastic deformation, and at the moment, only calculating the elastic deformation amount when calculating the total deformation amount of the inner wall of the cladding tube. And after the stress value of the inner wall of the cladding tube is judged to reach the yield point, whether the cladding tube is broken needs to be further judged. And if the cladding tube is broken, ending the calculation process. If the cladding tube is not broken, returning to continuously updating the pressure load, and circularly executing the steps of obtaining the deformation quantity of the inner wall and the outer wall of the cladding tube and the stress value of each grid of the cladding tube at the moment (assuming that the last updating moment is t, t = t + dt at the moment) under the pressure load updated each time.

S1016: and analyzing the boosting blasting simulation parameters to generate a boosting blasting simulation result comprising the pressure-resistant time and the section elongation of the cladding tube. According to the deformation amount of the outer wall of the cladding tube, a first corresponding relation between the preset pressure load and the deformation amount of the outer wall of the cladding tube under the preset pressure loads and a second corresponding relation between the application time of the preset pressure loads and the deformation amount of the outer wall of the cladding tube under the preset pressure loads can be obtained.

And as shown in fig. 11, the post-processing and output module is configured to process and analyze the pressure-boosting blasting simulation parameters to obtain pressure-boosting blasting simulation results such as stress, deformation, pressure-radius curve, and pressure-bearing time.

In the embodiment of the application, the traditional boosting blasting test needs to test the cladding tubes made of different materials under the combined conditions of different temperatures and different boosting rates, so that more working conditions are needed for the cladding tubes made of different materials. Furthermore, in the process of blasting experiments on the cladding tube, a large number of cladding tubes need to be adopted, and the cladding tube is damaged after each blasting experiment and cannot be recycled, so that the serious waste of resources is caused. According to the scheme, firstly, the boosting blasting test parameters of the selected cladding tube material are obtained, and one working condition in a real boosting blasting test is simulated through the selected boosting blasting test parameters; carrying out a blasting simulation experiment on a virtual model established by the selected cladding tube to generate blasting simulation parameters; and analyzing and processing the generated blasting simulation parameters to generate a boosting blasting simulation result, wherein the boosting blasting simulation result can be used for representing the high-temperature and high-pressure resistance of the selected cladding tube material. According to the scheme, the virtual experiment method for the real boosting blasting experiment is used for replacing the real boosting blasting experiment, various working conditions of the real boosting blasting experiment are simulated through corresponding various boosting blasting experiment parameters, and waste of a large number of experiments performed in the real boosting blasting experiment to the cladding tube material is avoided. The cost of the boosting blasting experiment is reduced, and the economy of the boosting blasting experiment is improved.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.

Based on the same inventive concept, the embodiment of the application also provides a cladding tube blasting simulation device for realizing the cladding tube blasting simulation method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the method, so that specific limitations in one or more embodiments of the cladding blasting simulation device provided below can be referred to the limitations on the cladding blasting simulation method in the foregoing, and details are not described herein again.

In one embodiment, as shown in fig. 12, there is provided a cladding tube burst simulation apparatus 1200 comprising: an acquisition module 1220, an analysis module 1240, and an output module 1260, wherein:

the obtaining module 1220 obtains the parameters of the boosting blasting experiment of the cladding tube.

And the analysis module 1240 is used for applying a pressure load to the virtual model corresponding to the cladding pipe according to the boosting blasting experiment parameters, performing a cladding pipe blasting simulation experiment and generating boosting blasting simulation parameters.

And the output module 1260 is used for analyzing the boosting blasting simulation parameters to generate a boosting blasting simulation result.

The detection decoding apparatus provided in this embodiment may implement the method embodiments described above, and the implementation principle and technical effects are similar, which are not described herein again.

In one embodiment, a cladding tube burst simulation apparatus 1200 is provided, further comprising: the modeling module is used for acquiring geometric parameters and material parameters of the cladding tube; establishing a geometric model of the cladding tube according to the geometric parameters and the material parameters of the cladding tube; and carrying out mesh division on the geometric model of the cladding tube by adopting a finite element calculation method to obtain a finite element model after the mesh division, and taking the finite element model after the mesh division as a virtual model corresponding to the cladding tube.

In one embodiment, the analysis module 1240 further includes a generation unit, a fracture judgment unit, and an output unit, wherein,

the generating unit is used for applying a preset pressure load to the inner wall of the virtual model corresponding to the cladding tube at the experiment temperature to generate a boosting blasting simulation parameter of the cladding tube under the preset pressure load; the pressure boosting blasting simulation parameters comprise deformation of the inner wall of the cladding tube, deformation of the outer wall of the cladding tube and stress values of each grid of the cladding tube.

And the fracture judgment unit is used for judging whether the inner wall of the cladding tube has a fracture phenomenon according to the stress value of each grid of the cladding tube under the conditions that the deformation amount of the inner wall and the outer wall of the cladding tube is smaller than the maximum deformation amount and the pressure load of the inner wall of the cladding tube is smaller than the maximum pressure load.

And the output unit is used for adjusting the preset pressure load according to the boosting rate to obtain the adjusted preset pressure load if the fracture phenomenon does not occur, circularly executing the step of applying the preset pressure load to the inner wall of the virtual model corresponding to the cladding tube by taking the adjusted preset pressure load as a new preset pressure load to generate a boosting blasting simulation parameter of the cladding tube under the preset pressure load until the fracture phenomenon of the cladding tube is determined according to the stress value of each grid of the cladding tube in the boosting blasting simulation parameter, and outputting the boosting blasting simulation parameter of the cladding tube under a plurality of preset pressure loads.

In one embodiment, the fracture judgment unit further includes a yield judgment subunit, a first calculation subunit, and a second calculation subunit, wherein,

and the yield judging subunit is used for judging whether the cladding tube has a yield phenomenon according to the stress value of each grid of the cladding tube.

The first calculation subunit is used for calculating the sum of a first deformation quantity of the inner wall of the cladding tube and a first deformation quantity of the outer wall if the yield phenomenon does not occur; the first deformation amount includes an elastic deformation amount.

The second calculating subunit is used for calculating a second deformation of the inner wall and a second deformation of the outer wall of the cladding tube if the yield phenomenon occurs, and judging whether the cladding tube has a fracture phenomenon or not; the second deformation amount includes an elastic deformation amount and a plastic deformation amount.

In one embodiment, the yield judgment subunit is further configured to compare the stress value of each grid of the cladding tube with the magnitude relation of the yield point of the cladding tube; and judging whether the cladding tube generates a yield phenomenon or not based on the size relation.

In one embodiment, the output module 1260 further comprises a third computing unit, a fourth computing unit, and a fifth computing unit.

And the third calculation unit is used for calculating a first corresponding relation between the plurality of preset pressure loads and the deformation amount of the outer wall of the cladding tube under the plurality of preset pressure loads according to the deformation amount of the outer wall of the cladding tube under the plurality of preset pressure loads.

And the fourth calculation unit is used for acquiring the application time of the plurality of preset pressure loads and calculating a second corresponding relation between the application time of the plurality of preset pressure loads and the deformation amount of the outer wall of the cladding tube under the plurality of preset pressure loads.

And the fifth calculating unit is used for calculating the pressure-resistant time and the section elongation of the cladding tube according to the first corresponding relation and the second corresponding relation.

All or part of the modules in the cladding tube blasting simulation device can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as shown in fig. 13. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operating system and the computer program to run on the non-volatile storage medium. The database of the computer equipment is used for storing boosting blasting experimental data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a cladding tube explosion simulation method.

Those skilled in the art will appreciate that the architecture shown in fig. 13 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:

In one embodiment, the processor when executing the computer program further performs the steps of:

acquiring geometric parameters and material parameters of the cladding tube;

and adopting a finite element calculation method to carry out meshing on the geometric model of the cladding tube to obtain a finite element model after meshing, and taking the finite element model after meshing as a virtual model corresponding to the cladding tube.

In one embodiment, the processor, when executing the computer program, further performs the steps of:

applying a preset pressure load to the inner wall of the virtual model corresponding to the cladding tube at an experimental temperature to generate a pressure-boosting blasting simulation parameter of the cladding tube under the preset pressure load; the boosting blasting simulation parameters comprise deformation of the inner wall of the cladding tube, deformation of the outer wall of the cladding tube and stress values of each grid of the cladding tube;

under the conditions that the deformation amount of the inner wall and the deformation amount of the outer wall of the cladding tube are smaller than the maximum deformation amount and the pressure load of the inner wall of the cladding tube is smaller than the maximum pressure load, judging whether the cladding tube is broken or not according to the stress value of each grid of the cladding tube;

if not, adjusting the preset pressure load according to the boosting rate to obtain the adjusted preset pressure load, taking the adjusted preset pressure load as a new preset pressure load, circularly executing the step of applying the preset pressure load to the inner wall of the virtual model corresponding to the cladding tube to generate a boosting blasting simulation parameter of the cladding tube under the preset pressure load, and outputting the boosting blasting simulation parameter of the cladding tube under a plurality of preset pressure loads until the fracture phenomenon of the cladding tube is determined according to the stress value of each grid of the cladding tube in the boosting blasting simulation parameter.

if yes, calculating a second deformation of the inner wall of the cladding tube and a second deformation of the outer wall of the cladding tube, and judging whether the cladding tube has a fracture phenomenon or not; the second deformation amount includes an elastic deformation amount and a plastic deformation amount.

comparing the stress value of each grid of the cladding tube with the magnitude relation of the yield point of the cladding tube; and judging whether the cladding tube generates a yield phenomenon or not based on the size relation.

calculating a first corresponding relation between the plurality of preset pressure loads and deformation quantities of the outer wall of the cladding tube under the plurality of preset pressure loads according to the deformation quantities of the outer wall of the cladding tube under the plurality of preset pressure loads;

In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:

applying a pressure load to the virtual model corresponding to the cladding tube according to the boosting blasting experiment parameters, and performing a cladding tube blasting simulation experiment to generate boosting blasting simulation parameters;

In one embodiment, the computer program when executed by the processor further performs the steps of:

acquiring geometric parameters and material parameters of the cladding tube;

and carrying out mesh division on the geometric model of the cladding tube by adopting a finite element calculation method to obtain a finite element model after the mesh division, and taking the finite element model after the mesh division as a virtual model corresponding to the cladding tube.

at an experimental temperature, applying a preset pressure load to the inner wall of the virtual model corresponding to the cladding tube to generate a boosting blasting simulation parameter of the cladding tube under the preset pressure load; the pressure boosting blasting simulation parameters comprise the deformation quantity of the inner wall of the cladding tube, the deformation quantity of the outer wall and the stress value of each grid of the cladding tube;

judging whether the cladding tube has yield phenomenon according to the stress value of each grid of the cladding tube;

if so, calculating a second deformation of the inner wall and a second deformation of the outer wall of the cladding tube, and judging whether the cladding tube is broken or not; the second deformation amount includes an elastic deformation amount and a plastic deformation amount.

In one embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, performs the steps of:

acquiring geometric parameters and material parameters of the cladding tube;

acquiring the application time of a plurality of preset pressure loads, and calculating a second corresponding relation between the application time of the plurality of preset pressure loads and the deformation amount of the outer wall of the cladding pipe under the plurality of preset pressure loads;

It should be noted that, the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include a Read-Only Memory (ROM), a magnetic tape, a floppy disk, a flash Memory, an optical Memory, a high-density embedded nonvolatile Memory, a resistive Random Access Memory (ReRAM), a Magnetic Random Access Memory (MRAM), a Ferroelectric Random Access Memory (FRAM), a Phase Change Memory (PCM), a graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the various embodiments provided herein may be, without limitation, general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, or the like.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A cladding tube blasting simulation method, the method comprising:

2. The method of claim 1, wherein the virtual model comprises a finite element model; the method further comprises the following steps:

acquiring geometric parameters and material parameters of the cladding tube;

3. The method of claim 1, wherein the boost blasting experiment parameters comprise experiment temperature, boost rate and preset constraints; the preset constraint conditions comprise the maximum deformation quantity of the inner wall and the outer wall of the cladding tube and the maximum pressure load of the inner wall of the cladding tube;

the method comprises the following steps of applying pressure load to a virtual model corresponding to the cladding pipe according to the boosting blasting experiment parameters, carrying out a cladding pipe blasting simulation experiment, and generating boosting blasting simulation parameters, and comprises the following steps:

applying a preset pressure load to the inner wall of the virtual model corresponding to the cladding tube at the experiment temperature to generate a boosting blasting simulation parameter of the cladding tube under the preset pressure load; the boosting blasting simulation parameters comprise deformation of the inner wall of the cladding tube, deformation of the outer wall of the cladding tube and stress values of each grid of the cladding tube;

4. The method according to claim 3, wherein the determining whether the cladding tube has a fracture phenomenon according to the stress values of the grids of the cladding tube comprises:

if not, calculating a first deformation quantity of the inner wall and a first deformation quantity of the outer wall of the cladding tube; the first amount of deformation comprises an amount of elastic deformation;

if so, calculating a second deformation of the inner wall and a second deformation of the outer wall of the cladding tube, and judging whether the cladding tube has a fracture phenomenon; the second deformation amount includes an elastic deformation amount and a plastic deformation amount.

5. The method of claim 4 wherein the predetermined constraints further comprise a yield point of the cladding tube; judging whether the cladding tube generates a yield phenomenon according to the stress value of each grid of the cladding tube, wherein the judging step comprises the following steps:

6. The method according to claim 3, wherein the pressure-boosting blasting simulation result comprises the pressure-resisting time and the section elongation of the cladding tube; analyzing the boosting blasting simulation parameters to generate a boosting blasting simulation result, wherein the step of analyzing the boosting blasting simulation parameters comprises the following steps:

acquiring the application time of a plurality of preset pressure loads, and calculating a second corresponding relation between the application time of the plurality of preset pressure loads and the deformation quantity of the outer wall of the cladding tube under the plurality of preset pressure loads;

7. A cladding tube burst simulation apparatus, the apparatus comprising:

8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor realizes the steps of the method of any one of claims 1 to 6 when executing the computer program.

9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 6.

10. A computer program product comprising a computer program, characterized in that the computer program realizes the steps of the method of any one of claims 1 to 6 when executed by a processor.