CN115310327A - Simulation analysis method and device for multi-working-condition combination - Google Patents
Simulation analysis method and device for multi-working-condition combination Download PDFInfo
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- CN115310327A CN115310327A CN202210954257.5A CN202210954257A CN115310327A CN 115310327 A CN115310327 A CN 115310327A CN 202210954257 A CN202210954257 A CN 202210954257A CN 115310327 A CN115310327 A CN 115310327A
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Abstract
The application relates to a simulation analysis method and a simulation analysis device for multi-working-condition combination. The method comprises the following steps: setting a finite element model and an analysis model, and defining boundary conditions of the finite element model and loads of the finite element model to obtain a stress simulation result under a single environmental condition; and selecting a stress simulation result under the single environmental condition which meets the preset condition, and superposing the stress simulation results under the single environmental condition which meets the preset condition according to the preset rule to obtain a stress simulation result under the comprehensive environment. The scheme provided by the application can solve the problem of stress simulation analysis in the comprehensive environment.
Description
Technical Field
The application relates to the technical field of computers, in particular to a simulation analysis method and device for multi-working-condition combination.
Background
CAE (Computer Aided Engineering), also known as Computer Aided Engineering, refers to an approximate numerical calculation method for performing numerical analysis, strength and life evaluation, optimization design, motion/dynamics simulation, etc. on a complex Engineering or product structure by means of a finite element method with the help of a Computer, and has become a powerful means for simulating a large Engineering structure. With the rapid development of science and technology, simulation has become an indispensable means for the development work of various complex systems. Since many products work in high temperature, high pressure, vibration and other comprehensive environments, the research on the reliability of the products is also increasingly important. Through simulation, the research and development period can be shortened, the production process can be improved, the cost can be reduced, and the influence of the external environment on the product can be known more truly, wherein the static simulation analysis is an extremely important part.
At present, when a structural body is subjected to static simulation analysis, many researches are often carried out in a single environment such as high temperature or high pressure, however, the structural body is usually in a comprehensive environment such as high temperature, high pressure and vibration, which is more complex than the single environment, and various factors under the comprehensive environment influence each other.
Disclosure of Invention
In order to solve or partially solve the problems in the related technology, the application provides a simulation analysis method and a simulation analysis device of multi-working-condition combination, which can improve the participation of users in a knowledge management platform and provide an evaluation system for efficiently evaluating the contribution knowledge items of the users.
On the one hand, the application provides a simulation analysis method of multi-working-condition combination, which specifically comprises the following steps:
setting a finite element model and an analysis model, and defining boundary conditions of the finite element model and loads of the finite element model to obtain a stress simulation result under a single environmental condition;
and selecting a stress simulation result under the single environmental condition which meets the preset condition, and superposing the stress simulation results under the single environmental condition which meets the preset condition according to the preset rule to obtain a stress simulation result under the comprehensive environment.
Optionally, setting a finite element model, defining boundary conditions and loads of the finite element model, including:
establishing a geometric model, segmenting the geometric model and dividing grids to generate a finite element model, and setting the material properties of the finite element model;
boundary conditions and loads are applied to the finite element model.
Optionally, the material properties include: material density, thermal conductivity and specific heat capacity.
Optionally, the stress simulation result under the single environmental condition that meets the preset condition includes a stress simulation result under the single environmental condition that meets the static analysis type.
Optionally, the step of superposing the stress simulation results under the single environmental condition according to a preset rule to obtain the stress simulation results under the comprehensive environment includes:
selecting a working condition combination according to the stress simulation result under the single environmental condition which meets the preset condition, wherein the working condition combination is used for representing the combination of the stress simulation results under at least two single environmental conditions;
judging the combination type of the working condition combination, and determining the superposition mode of the stress simulation result under the single environmental condition according to the combination type, wherein the superposition mode comprises linear superposition or square root superposition.
Optionally, the determining a combination type of the working condition combination and determining a superposition mode of the stress simulation result under the single environmental condition according to the combination type includes:
analyzing the linear relation between the load and the stress simulation result under the condition combination, and selecting linear superposition if the influence between the loads presents the linear relation;
and if the working condition combination and the load do not form a linear relation, selecting square root superposition.
Optionally, the combination type is linear superposition, and determining a superposition mode of the stress simulation result under the single environmental condition according to the combination type includes:
determining and acquiring a preset coefficient and a preset linear formula according to a single condition of the working condition combination;
and acquiring a linear superposition result of the working condition combination according to the working condition combination, the preset coefficient and the preset linear formula.
Optionally, the combination type is square root superposition, and determining a superposition mode of the stress simulation result under the single environmental condition according to the combination type includes:
determining a preset square root formula of the working condition superposition according to a single condition of the working condition combination;
and acquiring a square root superposition result of the working condition combination according to the working condition combination and a preset square root formula.
The second aspect of the present application provides a simulation analysis device with a combination of multiple operating modes, comprising:
the model unit is used for setting a finite element model and an analysis model, defining the boundary condition of the finite element model and the load of the finite element model, and acquiring a stress simulation result under a single environmental condition;
and the working condition combination unit is used for selecting the stress simulation result under the single environmental condition which accords with the preset condition, and superposing the stress simulation result under the single environmental condition which accords with the preset condition according to the preset rule so as to obtain the stress simulation result under the comprehensive environment.
Optionally, the operating condition combination unit includes an operating condition selecting subunit and an operating condition superposing subunit, including:
the working condition selection subunit is used for selecting a working condition combination according to the stress simulation result under the single environmental condition which meets the preset condition, and the working condition combination is used for representing the combination of the stress simulation results under at least two single environmental conditions;
and the working condition superposition subunit is used for judging the combination type of the working condition combination and determining the superposition mode of the stress simulation result under the single environmental condition according to the combination type, wherein the superposition mode comprises linear superposition or square root superposition.
A third aspect of the present application provides an electronic device comprising:
a processor; and
a memory having executable code stored thereon, which when executed by the processor, causes the processor to perform the method as above.
A fourth aspect of the present application provides a computer readable storage medium having stored thereon executable code, which when executed by a processor of an electronic device, causes the processor to perform the method as above.
The technical scheme provided by the application can comprise the following beneficial effects: on one hand, by setting a finite element model and an analysis model, defining the boundary condition of the finite element model and the load of the finite element model to obtain a stress simulation result under a single environmental condition; selecting a stress simulation result meeting a preset condition under a single environmental condition, and superposing the stress simulation results meeting the preset condition under the single environmental condition according to a preset rule to obtain a stress simulation result under the comprehensive environment. On the other hand, different stress simulation result superposition modes are selected according to the single environment and stress analysis, so that a stress superposition result with a good effect is obtained.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
FIG. 1 is a schematic flow chart of a multi-condition combined simulation analysis method according to an embodiment of the present application;
FIG. 2 is another schematic flow chart of a simulation analysis method for multi-condition combination according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a multi-condition combined simulation analysis apparatus according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device shown in an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
CAE (Computer Aided Engineering) refers to Computer Aided Engineering in Engineering design, and refers to the technology of using Computer to assist in solving and analyzing the structural mechanical properties of complex Engineering and products, optimizing the structural properties, etc., and organically organizing all the links of the Engineering. With the rapid development of science and technology, simulation has become an indispensable means for the development work of various complex systems. Since many products work in high temperature, high pressure, vibration and other comprehensive environments, the research on the reliability of the products is also increasingly important. Through simulation, the research and development period can be shortened, the production process can be improved, the cost can be reduced, and the influence of the external environment on the product can be known more truly, wherein the static simulation analysis is an extremely important part.
At present, when a structural body is subjected to static force simulation analysis, many researches are often performed in a single environment such as high temperature or high pressure, however, the structural body is usually in a comprehensive environment such as high temperature, high pressure and vibration, the comprehensive environment is more complex than the single environment, various factors in the comprehensive environment influence each other, and in order to enable a simulation result to be more practical and obtain a more real static force distribution result, a more accurate simulation method must be found.
Fig. 1 is a schematic flowchart of a simulation analysis method and device for multi-condition combination according to an embodiment of the present application.
As shown in fig. 1, the method comprises:
step S101, setting a finite element model and an analysis model, and defining boundary conditions of the finite element model and loads of the finite element model to obtain a stress simulation result under a single environmental condition.
The analysis model comprises a static analysis model, a modal analysis model and the like. Modal analysis belongs to the category of structural dynamics analysis, and the research objects are the inherent dynamic characteristics of the structure: frequency, damping, mode shape, etc., modal analysis attempts to characterize the structure using these parameters. In essence, the structure itself has characteristics of natural frequency and mode shape, and is related only to the mass and stiffness of the structure. The modal analysis model is concerned with the inherent characteristics of the structure. In modal analysis models, the natural frequency and the mode shape are common analytical parameters, both of which are present on the structure to be studied. On one hand, the modal analysis model calculates or tests the frequencies and the corresponding mode shapes; on the other hand, modal analysis models find out how extrinsic excitations (e.g., the amplitude and frequency of the excitation force) affect the dynamic response of the structure. The natural frequency and mode shape (depending on the mass and stiffness distribution of the structure) contribute to the vibration and noise design of the structure, while the structure can be optimally designed according to the mode frequency and mode shape and the vibration characteristics of the structure when excited. The static analysis model is used for analyzing the response of the structure under the action of given static load, and generally, the corresponding results are parameters such as displacement, constraint counter force, stress, strain and the like of the structure.
In step S101, a finite element model is set, and boundary conditions and loads of the finite element model are defined, including: establishing a geometric model, segmenting the geometric model and dividing meshes to generate a finite element model, and setting material properties of the finite element model; boundary conditions and loads are applied to the finite element model.
The finite element model is a model established by using a finite element analysis method, and is a group of unit combinations which are only connected at nodes, only transmit force by virtue of the nodes and are only restrained at the nodes. It is the result of the discretization of the mechanical model and is a digital model for numerical calculation. Optionally, the hexahedral mesh is adopted when the model divides the mesh, so that the number of units is reduced, the convergence speed is increased, the analysis precision is improved, and the numerical error is reduced.
The boundary conditions of the finite-element model are used to apply initial conditions to the original equations in the finite-element model.
Load generally refers to an external force applied to a machine or structure; power required to perform work is commonly referred to in power machines; electro-mechanical engineering refers to the power received by an electrical device or component from a power source. In addition, some non-mechanical factor that can cause forces in the mechanical structure is sometimes referred to as a load. Defining the load includes making approximate estimates of the load's size, distribution, and time dependencies. The load can be classified from different angles: (1) the load can be divided into static load and dynamic load according to the size, direction and whether the action point changes along with time; where the dead load includes a constant load that does not change with time (e.g., dead weight) and a quasi-dead load (e.g., boiler pressure) where the loading changes slowly so that inertial forces can be neglected. Dynamic loads include short duration, fast acting impact loads (e.g., air hammers), periodic loads that vary periodically with time (e.g., air compressor crankshafts), and random loads that vary non-periodically (e.g., automobile engine crankshafts). (2) The load distribution condition can be divided into concentrated load and distributed load, wherein the distributed load can be divided into 3 types of body load, surface load and linear load. (3) The effect of the load on the deformation of the rod may be classified into axial tensile or compressive load, bending load, torsional load, and the like.
In an embodiment of the invention, the material properties comprise: material density, thermal conductivity and specific heat capacity.
In step S101, a stress simulation result under a single environmental condition can be obtained according to the finite model and the analysis model.
And S102, selecting stress simulation results under the single environmental condition which accord with the preset conditions, and superposing the stress simulation results under the single environmental condition which accord with the preset conditions according to preset rules to obtain the stress simulation results under the comprehensive environment.
As shown in fig. 2, the process of superimposing stress simulation results under a single environmental condition according to a preset rule to obtain a stress simulation result under a comprehensive environment includes:
step S201: and selecting a working condition combination according to the stress simulation result under the single environmental condition which meets the preset condition, wherein the working condition combination is used for representing the combination of the stress simulation results under at least two single environmental conditions.
Specifically, the stress simulation result under a single environmental condition is input into the post-processing module, the post-processing module uses working condition combinations, the working condition combinations screen the current analysis types, only the static analysis types are allowed to be displayed, and the working condition combinations are allowed, but the other types do not allow the working condition combinations. The combined working condition combination at least comprises the combination of stress simulation results under two single environmental conditions. For example, a temperature-pressure working condition combination can be selected, namely, a simulation result under the influence of relevant temperature factors is obtained, and the simulation result under the influence of pressure factors is subjected to working condition combination, so that the simulation result under the combined action of temperature and pressure is analyzed. It is also possible to select different force directions for the combination of the operating conditions, for example, one operating condition is to receive a corresponding force in one direction, and the other operating condition is to receive a corresponding force in the other direction.
Step S202: and judging the combination type of the working condition combination, and determining the superposition mode of the stress simulation result under the single environmental condition according to the combination type, wherein the superposition mode comprises linear superposition or square root superposition.
In step S202, determining the combination type of the combination of the operating conditions includes: and directly reading the analysis type from the file according to the analysis type information carried by the result file, and screening out the static analysis as a combination type.
Specifically, judging the combination type of the working condition combination, and determining the superposition mode of the stress simulation result under the single environmental condition according to the combination type includes: analyzing the linear relation between the load and the stress simulation result under the condition combination, and selecting linear superposition if the influence between the loads presents the linear relation; and if the working condition combination and the load do not form a linear relation, selecting square root superposition.
In this embodiment, step S202 selects the working conditions meeting the conditions, and calculates the combination of the working conditions by setting a linear or square root method to generate a new result, so as to restore the actual working conditions of the simulation calculation to the maximum extent.
In this embodiment, it is determined whether the relation is linear according to the actual conditions of the working conditions, and if the final working conditions and the current calculation results of the superposition are linear, linear combination is performed, otherwise square root combination is performed. The formula for linear combination and square root combination is shown later.
If the actual conditions have a linear relationship, the user should select a linear combination. Linear combinations are effective against such problems when the structure is subjected to many different types of loads, the effects of which on each other exhibit a linear relationship. Otherwise, the user should select the square root combination to adapt to the nonlinear effect and approach the real working condition.
In one embodiment, the combination of conditions is stresses on different boundary surfaces, where one static condition is where the user applies a 1 newton concentration force on one boundary surface, the remaining boundaries are fixed constraints, another condition applies a 2 newton concentration force, and the remaining boundaries are fixed constraints. At this time, the actual working condition of the user applies 1.5 newton of concentrated force to the boundary, linear combination can be used, one working condition is selected, the combination coefficient is selected to be 0.5, the second working condition is selected, and the combination coefficient is also 0.5, so that the working condition under the condition of 1.5 newton can be known by combining the working conditions. The coefficient of the working condition combination can be obtained through the actual working condition and can also be obtained through model training. In the method, the user can finely adjust the correlation coefficient according to the actual situation.
In an embodiment, the combination type in step S202 is linear superposition, and determining a superposition manner of the stress simulation result under the single environmental condition according to the combination type includes: determining and acquiring a preset coefficient and a preset linear formula according to a single condition of the working condition combination; and acquiring a linear superposition result of the working condition combination according to the working condition combination, the preset coefficient and the preset linear formula.
In one embodiment, as shown in Table 1, the table is assumed to be based on the results of three conditions combined, and the table includes three conditions, two types of static analysis.
TABLE 1
The combined operating condition name is denoted as E, and the basic calculation formula (applicable to component calculation) is as follows:
the first method is as follows: selecting a linear superposition mode for linear combination, and then adopting a formula (1):
E＝(0.3*A)+(-0.5*B)+(1*D) (1)。
the formula (1) is used as an input condition of the combined working condition, and the output result includes five working condition results, i.e., displacement result, stress _ node (Stress), stress _ node (Strain), equistress (equivalent Stress), equistrain (equivalent Strain) and table 2. Wherein Dx, dy and Dz are displacements of combined working conditions in three directions, sx, sy, sz, sxy, syz and Szx are stresses in 6 directions, ex, ey, ez, exy, eyz and Ezx are strains in 6 directions, S1, S2 and S3 are main stresses in three directions, and E1, E2 and E3 are main strains in three directions. Magitude, smises and Emises are the physical sum, equivalent stress and equivalent strain, respectively.
Table 2 illustrates the calculation formula of each result of the combined condition in a linearized manner:
TABLE 2
In one embodiment, the combination type is square root superposition, and determining the superposition mode of the stress simulation result under the single environmental condition according to the combination type comprises: determining a preset square root formula of working condition superposition according to a single condition of working condition combination; and acquiring a square root superposition result of the working condition combination according to the working condition combination and a preset square root formula.
Specifically, a second mode is selected for four working conditions of the table one: selecting a square root superposition mode to carry out square root combination, and adopting a formula (2):
E＝sqrt((0.3*A)^2+(-0.5*B)^2+(1*D)^2) (2)
in equation (2), sqrt is a square root function of non-negative real numbers, where equation (1) is used as an input condition of the combined condition, the output result includes table 3, and the condition result includes: displacement, stress _ node, equistress, equistrain, five operating condition results. Wherein Dx, dy and Dz are displacements of combined working conditions in three directions, sx, sy, sz, sxy, syz and Szx are stresses in 6 directions, ex, ey, ez, exy, eyz and Ezx are strains in 6 directions, S1, S2 and S3 are main stresses in three directions, and E1, E2 and E3 are main strains in three directions. Magitude, smises and Emises are the physical sum, equivalent stress and equivalent strain, respectively.
TABLE 3
In one embodiment, after the stress simulation result under the comprehensive environment is generated, data processing is performed on the generated stress simulation result under the comprehensive environment to obtain cloud image output, isoline isosurface, curve drawing, field variable output and path data, and the working condition combination is written into the project file for storage.
The method comprises the steps of defining boundary conditions of a finite element model and loads of the finite element model by setting the finite element model and an analysis model so as to obtain a stress simulation result under a single environmental condition; selecting a stress simulation result meeting a preset condition under a single environmental condition, and superposing the stress simulation results meeting the preset condition under the single environmental condition according to a preset rule to obtain a stress simulation result under the comprehensive environment. On the other hand, different stress simulation result superposition modes are selected according to the single environment and stress analysis, so that a stress superposition result with a good effect is obtained.
Referring to fig. 3, the multi-condition combined simulation analysis device includes:
a model unit 301, configured to set a finite element model and an analysis model, and define boundary conditions of the finite element model and a load of the finite element model, so as to obtain a stress simulation result under a single environmental condition;
the working condition combination unit 302 is configured to select a stress simulation result under a single environmental condition that meets a preset condition, and superimpose the stress simulation result under the single environmental condition that meets the preset condition according to a preset rule to obtain a stress simulation result under a comprehensive environment.
The model unit 301 is configured to build a geometric model, segment the geometric model and divide a mesh to generate a finite element model, and set material properties of the finite element model; boundary conditions and loads are applied to the finite element model.
In one embodiment, the material properties include: material density, thermal conductivity and specific heat capacity.
The working condition combination unit 302 further includes a selection sub-module, and the selection sub-module selects a stress simulation result under a single environmental condition that meets a preset condition, including: and selecting a stress simulation result which accords with the static analysis type under a single environmental condition.
The working condition combination unit 302 includes a working condition selection subunit and a working condition superposition subunit, and specifically includes: the working condition selection subunit is used for selecting a working condition combination according to the stress simulation result under the single environmental condition which meets the preset condition, and the working condition combination is used for representing the combination of the stress simulation results under at least two single environmental conditions; and the working condition superposition subunit is used for judging the combination type of the working condition combination and determining the superposition mode of the stress simulation result under the single environmental condition according to the combination type, wherein the superposition mode comprises linear superposition or square root superposition.
In one embodiment, the working condition stacking subunit is configured to determine a combination type of the working condition combination, and determine a stacking manner of the stress simulation result under the single environmental condition according to the combination type, and includes: analyzing the linear relation between the load and the stress simulation result under the condition combination, and selecting linear superposition if the influence between the loads presents the linear relation; and if the working condition combination and the load do not form a linear relation, selecting square root superposition.
In one embodiment, the combination type is linear superposition, and the working condition superposition subunit determines a superposition mode of the stress simulation result under the single environmental condition according to the combination type, including: determining and acquiring a preset coefficient and a preset linear formula according to a single condition of the working condition combination; and acquiring a linear superposition result of the working condition combination according to the working condition combination, the preset coefficient and the preset linear formula.
In an embodiment, the combination type is square root superposition, and the determining, by the working condition superposition subunit, a superposition manner of the stress simulation result under the single environmental condition according to the combination type includes: determining a preset square root formula of the working condition superposition according to a single condition of the working condition combination; and acquiring a square root superposition result of the working condition combination according to the working condition combination and a preset square root formula.
The method comprises the steps of defining boundary conditions of a finite element model and loads of the finite element model by setting the finite element model and an analysis model so as to obtain a stress simulation result under a single environmental condition; selecting a stress simulation result meeting a preset condition under a single environmental condition, and superposing the stress simulation results meeting the preset condition under the single environmental condition according to a preset rule to obtain a stress simulation result under the comprehensive environment. On the other hand, different stress simulation result superposition modes are selected according to the single environment and stress analysis, so that a stress superposition result with a good effect is obtained.
Fig. 4 is a schematic structural diagram of an electronic device shown in an embodiment of the present application.
Referring to fig. 4, an electronic device 400 includes a memory 402 and a processor 404.
Processor 404 may be a Central Processing Unit (CPU), other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 402 may include various types of storage units, such as system memory, read Only Memory (ROM), and permanent storage. The ROM may store, among other things, static data or instructions for the processor 404 or other modules of the computer. The persistent storage device may be a read-write storage device. The persistent storage may be a non-volatile storage device that does not lose stored instructions and data even after the computer is powered down. In some embodiments, the persistent storage device employs a mass storage device (e.g., magnetic or optical disk, flash memory) as the persistent storage device. In other embodiments, the permanent storage may be a removable storage device (e.g., floppy disk, optical drive). The system memory may be a read-write memory device or a volatile read-write memory device, such as a dynamic random access memory. The system memory may store instructions and data that some or all of the processors require at runtime. Further, the memory 402 may comprise any combination of computer-readable storage media, including various types of semiconductor memory chips (e.g., DRAM, SRAM, SDRAM, flash, programmable read only memory), magnetic and/or optical disks, may also be employed. In some embodiments, memory 402 may include a removable storage device that is readable and/or writable, such as a Compact Disc (CD), a read-only digital versatile disc (e.g., DVD-ROM, dual layer DVD-ROM), a read-only Blu-ray disc, an ultra-density optical disc, a flash memory card (e.g., SD card, min SD card, micro-SD card, etc.), a magnetic floppy disc, or the like. Computer-readable storage media do not contain carrier waves or transitory electronic signals transmitted by wireless or wired means.
The memory 402 has stored thereon executable code that, when processed by the processor 404, causes the processor 404 to perform some or all of the methods described above.
Furthermore, the method according to the present application may also be implemented as a computer program or computer program product comprising computer program code instructions for performing some or all of the steps of the above-described method of the present application.
Alternatively, the present application may also be embodied as a computer-readable storage medium (or non-transitory machine-readable storage medium or machine-readable storage medium) having executable code (or a computer program or computer instruction code) stored thereon, which, when executed by a processor of an electronic device (or server, etc.), causes the processor to perform part or all of the various steps of the above-described method according to the present application.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or improvements to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (12)
1. A simulation analysis method of multi-working-condition combination is characterized by comprising the following steps:
setting a finite element model and an analysis model, and defining boundary conditions of the finite element model and loads of the finite element model to obtain a stress simulation result under a single environmental condition;
selecting a stress simulation result meeting a preset condition under a single environmental condition, and superposing the stress simulation results meeting the preset condition under the single environmental condition according to a preset rule to obtain a stress simulation result under the comprehensive environment.
2. The method of claim 1, wherein the setting the finite element model, defining boundary conditions and loads of the finite element model, comprises:
establishing a geometric model, segmenting the geometric model and dividing meshes to generate the finite element model, and setting the material properties of the finite element model;
and applying boundary conditions and loads to the finite element model.
3. The method of claim 2, wherein the material properties comprise: material density, thermal conductivity and specific heat capacity.
4. The method according to claim 1, wherein the stress simulation result under a single environmental condition that meets the preset condition comprises a stress simulation result under a single environmental condition that meets a static analysis type.
5. The method according to claim 1, wherein the superimposing the stress simulation results under the single environmental condition according to a preset rule to obtain the stress simulation result under the comprehensive environment comprises:
selecting a working condition combination according to the stress simulation result under the single environmental condition which accords with the preset condition, wherein the working condition combination is used for representing the combination of the stress simulation results under at least two single environmental conditions;
and judging the combination type of the working condition combination, and determining the superposition mode of the stress simulation result under the single environmental condition according to the combination type, wherein the superposition mode comprises linear superposition or square root superposition.
6. The method according to claim 5, wherein the determining the combination type of the working condition combination and determining the superposition manner of the stress simulation result under the single environmental condition according to the combination type comprises:
analyzing the linear relation between the load under the working condition combination and the stress simulation result, and selecting the linear superposition if the influence between the loads presents the linear relation;
and if the working condition combination and the load do not form a linear relation, selecting the square root superposition.
7. The method according to claim 6, wherein the combination type is linear superposition, and the determining the superposition mode of the stress simulation result under the single environmental condition according to the combination type comprises:
determining and acquiring a preset coefficient and a preset linear formula according to the single condition of the working condition combination;
and acquiring a linear superposition result of the working condition combination according to the working condition combination, the preset coefficient and the preset linear formula.
8. The method of claim 6, wherein the combination type is square root superposition, and the determining the superposition manner of the stress simulation result under the single environmental condition according to the combination type comprises:
determining a preset square root formula of the working condition superposition according to the single condition of the working condition combination;
and acquiring a square root superposition result of the working condition combination according to the working condition combination and the preset square root formula.
9. A multi-condition combined simulation analysis device is characterized by comprising:
the model unit is used for setting a finite element model and an analysis model, defining boundary conditions of the finite element model and loads of the finite element model and acquiring a stress simulation result under a single environmental condition;
and the working condition combination unit is used for selecting the stress simulation result under the single environmental condition which accords with the preset condition, and superposing the stress simulation result under the single environmental condition which accords with the preset condition according to the preset rule so as to obtain the stress simulation result under the comprehensive environment.
10. The apparatus of claim 9, wherein the condition combination unit, including the condition selection subunit and the condition superposition subunit, comprises:
the working condition selection subunit is used for selecting a working condition combination according to the stress simulation result under the single environmental condition which accords with the preset condition, and the working condition combination is used for representing the combination of the stress simulation results under at least two single environmental conditions;
and the working condition superposition subunit is used for judging the combination type of the working condition combination and determining the superposition mode of the stress simulation result under the single environmental condition according to the combination type, wherein the superposition mode comprises linear superposition or square root superposition.
11. An electronic device, comprising:
a processor; and
a memory having executable code stored thereon, which when executed by the processor, causes the processor to perform the method of any one of claims 1 to 8.
12. A computer-readable storage medium having stored thereon executable code which, when executed by a processor of an electronic device, causes the processor to perform the method of any one of claims 1 to 8.
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| CN116721722B (en) * | 2023-06-19 | 2023-12-19 | 盛年科技有限公司 | Mechanical property database and numerical calculation method based on chiral lattice structure |
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