CN115795977B - Sealing element calculation method and system based on finite element analysis - Google Patents
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Abstract
The invention relates to the technical field of seal calculation, and discloses a seal calculation method and a seal calculation system based on finite element analysis, wherein the method comprises the following steps: acquiring a size parameter of a physical structure, and determining a three-dimensional structure model of the physical structure based on the size parameter of the physical structure; acquiring materials corresponding to the members, and determining physical properties of the materials corresponding to the members according to the materials corresponding to the members; calculating the pressure required for meeting the compression amount of the components according to the physical properties of the materials corresponding to the components; and establishing a mechanical model for the component based on the pressure required by the compression amount of the component, and carrying out finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component. The invention can reduce the actual experiment times and reduce the cost of manpower and material resources.
Description
Technical Field
The invention relates to the technical field of seal calculation, in particular to a seal calculation method, a seal calculation system, a seal calculation device and a seal calculation computer readable storage medium based on finite element analysis.
Background
An elastic sealing strip, such as rubber, is an elastic material with remarkable elasticity, can greatly change the size of the sealing strip under the action of external force, and is subjected to great reversible deformation, and the property of the rubber makes the sealing strip one of main sealing structure materials, so that the sealing strip can be used as a contact sealing element of any sealing structure.
At present, the existing sealing elastic strip is comprehensively affected by a plurality of factors such as the existing materials, the manufacturing process, the use environment, the cost and the like, ethylene propylene diene monomer rubber is mostly selected as a main raw material, and the gap between the two surfaces to be sealed can be blocked due to rubber, which is the result of interaction on a certain actual contact surface.
The detection of the sealing effect and leakage condition is mostly carried out by adopting an experimental detection method at present, and the method needs to process physical sample pieces, has long period and high cost, is not beneficial to the modification of a scheme and affects the project progress.
The present invention has been made in view of this.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a sealing element calculating method, a sealing element calculating system, a sealing element calculating device and a sealing element calculating computer readable storage medium based on finite element analysis, which can reduce actual experiment times and reduce cost of manpower and material resources.
In order to solve the technical problems, the basic concept of the technical scheme adopted by the invention is as follows:
a method of seal calculation based on finite element analysis, the method comprising the steps of:
acquiring a dimension parameter of a physical structure, and determining a three-dimensional structure model of the physical structure based on the dimension parameter of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components;
acquiring materials corresponding to the members based on the three-dimensional structure model and the members, and determining physical properties of the materials corresponding to the members according to the materials corresponding to the members;
calculating the pressure required for meeting the compression amount of the components according to the physical properties of the materials corresponding to the components;
and establishing a mechanical model for the component based on the pressure required by the compression amount of the component, and carrying out finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component.
In a preferred embodiment of any of the above, the means comprises a screw model, a cap model, a seal model and a housing model.
In a preferred embodiment of any of the foregoing aspects, determining a three-dimensional structural model of the physical structure based on dimensional parameters of the physical structure includes:
based on the dimensional parameters of the physical structure, a three-dimensional structure model of the physical structure is assumed, wherein the specific assumption method comprises the following steps:
assume a high H of the shell model 1 Much greater than the thickness H of the cap model 4 At least five times more than the shell model is provided with a groove model;
based on the assumed shell model, it is assumed that a seal model arranged in the groove model is elastically deformed only along the thickness direction of the seal model, the seal model is not deformed in the width direction, and the extrusion force generated by the side wall of the groove model to the width direction of the seal model is zero, wherein the area of the upper surface of the seal model is unchanged and is in contact with the cover model under the acting force of the cover model, the material of the seal model is elastic rubber material, and the material of the shell model is rigid material.
In a preferred embodiment of any of the foregoing aspects, the physical property includes an elastic modulus E of the seal model, and a compression amount a of the seal model, wherein a calculation formula of the compression amount a of the seal model is:
In a preferred embodiment of any of the foregoing aspects, the elastic modulus E of the seal model is calculated by the formula:
In a preferred embodiment of any of the foregoing aspects, establishing a mechanical model for the member, and performing finite element analysis on the member according to the mechanical model to obtain a deformation amount of the member, including:
determining the reaction force F of the cap model based on the pressure F of the seal model 1 Wherein the pressure of the seal modelF reaction force with the cap model F 1 Equal;
building the reaction force F of the cap model based on the area of the upper cross section of the seal model 1 And the reaction force F of the cover model is applied along with the application of the external force 1 Wherein the area of the upper cross section of the seal model is constant with the reaction force F of the cap model 1 Is equal to the reaction force F of the cover model 1 Uniformly distributed on the area of the upper cross section of the sealing element model;
reaction force F based on the cap model 1 Reaction force F of the cap model 1 And the deformation amount of the cover model is calculated as delta.
In a preferred embodiment of any of the foregoing aspects, after obtaining the deformation amount of the member, the method further includes:
performing a waterproof test on the physical structure, and obtaining a waterproof test result;
and judging whether the physical structure meets the calculated waterproof grade or not based on the waterproof test result, and if the physical structure meets the calculated waterproof grade, verifying the waterproof grade of the sealing element model.
In a second aspect, a seal computing system based on finite element analysis, comprising:
the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the size parameter of a physical structure and determining a three-dimensional structure model of the physical structure based on the size parameter of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components;
the determining module is used for acquiring materials corresponding to the members based on the three-dimensional structure model and the members, and determining physical properties of the materials corresponding to the members according to the materials corresponding to the members;
a calculation module for calculating a pressure required to satisfy the compression amount of the member according to physical properties of materials corresponding to each of the plurality of members;
and the processing module is used for establishing a mechanical model for the component based on the pressure required by the compression amount of the component, and carrying out finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component.
In a third aspect, a seal computing device based on finite element analysis, comprising:
one or more processors;
and a storage device for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the seal calculation method based on finite element analysis.
In a fourth aspect, a computer readable storage medium has a program stored therein, which when executed by a processor, implements the seal calculation method based on finite element analysis.
Compared with the prior art, the sealing element calculation method based on finite element analysis, disclosed by the embodiment of the application, has the advantages that the mechanical model is built for the component based on the pressure required by the compression quantity of the component, the physical structure can be conveniently modeled, the finite element analysis is carried out on the component according to the mechanical model, the deformation quantity of the component is obtained, the product can be calculated into the electronic model, and then the experiment is carried out on the electronic model, so that the experiment times of the actual product can be reduced, and the cost of manpower and material resources is reduced.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. Some specific embodiments of the present application will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings denote the same or similar parts or portions, and it will be understood by those skilled in the art that the drawings are not necessarily drawn to scale, in which:
FIG. 1 is a flow chart of a seal calculation method based on finite element analysis according to an embodiment of the present application.
Fig. 2 is an exploded schematic view of the physical structure of a seal calculation method based on finite element analysis according to an embodiment of the present application.
Fig. 3 is a mechanical model schematic diagram of a calculation model of a seal calculation method based on finite element analysis according to an embodiment of the present application.
FIG. 4 is a schematic representation of the variation of the cap model of the seal calculation method based on finite element analysis according to the embodiment of the present application.
FIG. 5 is a schematic diagram of a seal computing system based on finite element analysis according to an embodiment of the present application.
FIG. 6 is a schematic diagram of a seal computing device based on finite element analysis according to an embodiment of the present application.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments, the elements of which are schematically represented and not drawn to scale.
Detailed Description
In order to enable those skilled in the art to better understand the present application, the following description will make clear and complete descriptions of the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The following examples of the present application illustrate the aspects of the present application in detail by taking the seal calculation method based on finite element analysis as an example, but the present embodiment is not limited to the scope of the present application.
As shown in fig. 1 to 4, the present invention provides a seal calculation method based on finite element analysis, the method comprising the steps of:
step 1: and acquiring the dimensional parameters of the physical structure, and determining a three-dimensional structure model of the physical structure based on the dimensional parameters of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components.
In the method for calculating the sealing element based on finite element analysis according to the embodiment of the invention, the physical structure comprises a shell 1, a cover 2 and a sealing strip 3, the shell 1 and the cover 2 are sealed by the sealing strip 3, a plurality of screw holes 4 are arranged on the cover 2, then screws 5 penetrate through the screw holes 4 to connect the shell 1 and the cover 2, wherein the top of the shell 1 is provided with a groove 6 for placing the sealing strip 3, wherein the sealing strip 3 is made of rubber materials, so that the sealing strip has elasticity and can play a role of sealing, and the size, the length, the width and the height of the shell 1 are L respectively 1 ,W 1 And H 1 A groove 6 is formed on the contact surface of the shell 1 and the cover 2 so as to facilitate the placement of the sealing strip 3, and the groove 6 has a size width W 2 The depth of the groove 6 is H 2 The shell 1 is provided with n threaded holes (4 in schematic view), the sealing strip 3 is of a size and a width W 3 Thickness H 3 ,H 3 Greater than H 2 To achieve the sealing effect, W 1 Less than or equal to W 2 The cover 2 has the dimensions of length, width and height of L respectively 4 ,W 4 And H 4 The cover 2 is provided with four screw holes 4.
When the actual physical structure equipment needs to be modeled, the dimensional parameters of the physical structure need to be known first, wherein the dimensional parameters include the length, the width, the height, the thickness and the like of the physical structure, and the physical structure can be drawn into a three-dimensional model structure of an actual product by collecting the dimensional parameters of the physical structure, wherein the three-dimensional model structure comprises a plurality of components, each component comprises a shell model corresponding to the shell 1, a screw model corresponding to the screw 5, a cover model corresponding to the cover 2 and a sealing piece model corresponding to the sealing strip 3, the groove 6 corresponds to the groove model on the shell model and the screw hole 4 corresponds to the screw hole model on the cover model, so that experiments can be performed on the physical structure according to the components, the size of the sealing piece model can be calculated, and the practical corresponding sealing strip 3 can be produced according to the calculated sealing piece model, thereby reducing the experiment times of the actual product, and reducing the labor cost.
In another alternative embodiment of the present application, determining a three-dimensional structure model of the physical structure based on dimensional parameters of the physical structure includes:
step 11: based on the dimensional parameters of the physical structure, a three-dimensional structure model of the physical structure is assumed, wherein the specific assumption method comprises the following steps:
step 12: assume a high H of the shell model 1 Much greater than the thickness H of the cap model 4 At least five times more than the shell model is provided with a groove model;
step 13: based on the assumed shell model, it is assumed that a seal model arranged in the groove model is elastically deformed only along the thickness direction of the seal model, the seal model is not deformed in the width direction, and the extrusion force generated by the side wall of the groove model to the width direction of the seal model is zero, wherein the area of the upper surface of the seal model is unchanged and is in contact with the cover model under the acting force of the cover model, the material of the seal model is elastic rubber material, and the material of the shell model is rigid material.
In the seal calculation method based on finite element analysis according to the embodiment of the invention, when modelingAssume a high H of the housing 1 1 Much greater than the thickness H of the cover 2 4 And at least 5 times, under the condition of force loading, the deformation condition of the sealing strip 3 is simplified without considering the deformation of the shell 1, only the elastic deformation of the sealing strip 3 in the thickness direction is considered, the deformation in the width direction and the extrusion of the inner wall of the groove 6 to the two sides of the sealing strip 3 in the width direction are not considered, the area of the upper surface of the sealing strip 3 is considered to be unchanged and always contacted with the cover under the acting force of the cover 2, the material of the sealing strip 3 is an elastic rubber material, and the shell 1 is made of a rigid material.
In the embodiment of the invention, rubber (Rubber) is a high-elasticity polymer material with reversible deformation, is elastic at room temperature, can generate larger deformation under the action of small external force, and can recover the original shape after removing the external force, wherein the Rubber belongs to a completely amorphous polymer, has low glass transition temperature and large molecular weight, is more than hundreds of thousands, is divided into natural Rubber and synthetic Rubber, and is prepared by extracting colloid from plants such as Rubber trees, rubber plants and the like; synthetic rubber is obtained by polymerizing various monomers, wherein the natural rubber is made of latex, and a part of non-rubber components contained in the latex is remained in solid natural rubber, and generally 92% -95% of rubber-containing hydrocarbon is contained in the natural rubber, and 5% -8% of non-rubber hydrocarbon is contained in the natural rubber.
Because of different preparation methods, different production places and even different rubber picking seasons, the proportions of the components are possibly different, but basically the components are within the range, the protein can promote the vulcanization of rubber and delay aging, on the other hand, the protein has stronger water absorption, can cause the moisture absorption and mildew of rubber and the reduction of insulativity, the protein has the defect of increasing the heat generation property, the acetone extract is a plurality of higher fatty acids and sterols, some of the acetone extract plays the roles of a natural anti-aging agent and an accelerant, the powdery compounding agent can be helped to disperse in the mixing process and soften rubber, the ash mainly contains salts such as magnesium phosphate, calcium phosphate and the like, and a small amount of metal compounds such as copper, manganese, iron and the like are contained in ash, because the valence-changing metal ions can promote the aging of rubber, the content of the metal compounds is controlled, the moisture in dry rubber is not more than 1 percent, the rubber can volatilize in the processing process, when the moisture content is too much, the rubber is easy to mildew in the storage process, and the compounding agent is easy to be clustered in the mixing process; air bubbles are easy to generate in the calendaring and extruding processes, air bubbles are generated in the vulcanizing process or are in a spongy shape, and the like.
The general rubber has better comprehensive performance and wide application, and mainly comprises the following components: (1) natural rubber, prepared from latex of Hevea rubber tree, has cis-polyisoprene as basic chemical component. Good elasticity, high strength and good comprehensive performance. (2) Isoprene rubber, which is known as cis-1, 4-polyisoprene rubber, is a high cis synthetic rubber made from isoprene, and is also known as synthetic natural rubber because of its structure and properties similar to those of natural rubber. (3) Styrene butadiene rubber, SBR for short, is prepared by copolymerizing butadiene and styrene. The method is divided into emulsion polymerized styrene butadiene rubber and solution polymerized styrene butadiene rubber. The combination property and chemical stability are good. (4) Butadiene rubber, which is known as cis-1, 4-polybutadiene rubber, BR for short, is produced by polymerizing butadiene. Compared with other general rubber, the vulcanized butadiene rubber has particularly excellent cold resistance, wear resistance and elasticity, less heat generation under dynamic load and good ageing resistance, and is easy to be used together with natural rubber, chloroprene rubber, nitrile rubber and the like. (5) Chloroprene rubber, abbreviated as CR, is prepared by polymerization of chloroprene. Has good comprehensive performance, oil resistance, flame resistance, oxidation resistance and ozone resistance. However, the density is high, the crystallization and hardening are easy at normal temperature, the storage property is poor, and the cold resistance is poor.
As shown in fig. 1 to 4, the present invention provides a seal calculation method based on finite element analysis, the method further comprising the steps of:
step 2: acquiring materials corresponding to the members based on the three-dimensional structure model and the members, and determining physical properties of the materials corresponding to the members according to the materials corresponding to the members;
step 3: and calculating the pressure required for meeting the compression amount of the member according to the physical properties of the materials corresponding to the members.
In the method for calculating the sealing element based on finite element analysis according to the embodiment of the present invention, in the three-dimensional structural model, in order to calculate the sealing element more accurately, the material corresponding to each member and the physical property of the material need to be known, so that the analysis can be performed according to the stress condition of the member, where in the embodiment of the present invention, the physical property includes the elastic modulus E of the sealing element model and the compression amount a of the sealing element model, and the calculation formula of the compression amount a of the sealing element model is:
As shown in fig. 1 to 4, the present invention provides a seal calculation method based on finite element analysis, the method further comprising the steps of:
step 4: based on the pressure required by the compression amount of the component, a mechanical model is built for the component, finite element analysis is carried out on the component according to the mechanical model, and the deformation amount of the component is obtained, and the method specifically comprises the following steps:
step 41: according toThe pressure F of the seal model determines the reaction force F of the cap model 1 Wherein the pressure F of the seal model and the reaction force F of the cover model 1 Equal;
step 42: building the reaction force F of the cap model based on the area of the upper cross section of the seal model 1 And the reaction force F of the cover model is applied along with the application of the external force 1 Wherein the area of the upper cross section of the seal model is constant with the reaction force F of the cap model 1 Is equal to the reaction force F of the cover model 1 Uniformly distributed on the area of the upper cross section of the sealing element model;
step 43: reaction force F based on the cap model 1 Reaction force F of the cap model 1 And the deformation amount of the cover model is calculated as delta.
In the method for calculating the sealing element based on finite element analysis, disclosed by the embodiment of the invention, the deformation of the cover model is calculated by establishing a mechanical model for the component, so that the specific change condition of the cover model can be conveniently mastered, and the later calculation is convenient, therefore, the deformation of the cover model is calculated through the model, and further, the better sealing effect of data can be optimized through the model analysis.
As shown in fig. 1 to 4, the present invention provides a seal calculation method based on finite element analysis, the method further comprising the steps of:
step 5: performing a waterproof test on the physical structure and obtaining a waterproof test result, wherein the waterproof test is used for determining and evaluating the capability of the physical structure to withstand the influence of liquid water flowing down or falling on the physical structure in the use process;
step 6: judging whether the physical structure meets the calculated waterproof grade or not based on the waterproof test result, if the physical structure meets the calculated waterproof grade, verifying the waterproof grade of the sealing element model, wherein when the waterproof pressure performance test is carried out, after the physical structure is installed, the physical structure is immersed in a container for containing water, a pressure value which is the same as an overpressure mark value is applied within 1 minute, if the pressurization value of a watch without the overpressure mark is 2X 100K Pa (2 Bar), the watch is kept for 10 minutes, and then the pressure is reduced to the ambient environmental pressure within 1 minute;
step 7: or under the condition of meeting the economic and use requirements, the sealing element calculation method in the steps 1 to 4 is popularized to other physical structures with the same sealing grade requirements, if the deformation quantity of the cover model of other physical structures through finite element analysis is delta, the same grade waterproof requirement can be considered to be achieved, the waterproof experiment verification is not needed, and if the requirement is not met, the method can be repeated to calculate the optimization.
As shown in fig. 5, a seal computing system based on finite element analysis, comprising:
the device comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring dimensional parameters of a physical structure and determining a three-dimensional structure model of the physical structure based on the dimensional parameters of the physical structure, the three-dimensional structure model is formed by combining a plurality of components, the physical structure comprises a shell 1, a cover 2 and a sealing strip 3, the shell 1 and the cover 2 are sealed through the sealing strip 3, a plurality of screw holes 4 are formed in the cover 2, then screws 5 penetrate through the screw holes 4 to connect the shell 1 with the cover 2, a groove 6 for placing the sealing strip 3 is formed in the top of the shell 1, the sealing strip 3 is made of rubber materials, and therefore has elasticity and can play a role of sealing, and the size, the length, the width and the height of the shell 1 are L respectively 1 ,W 1 And H 1 A groove 6 is formed on the contact surface of the shell 1 and the cover 2 so as to facilitate the placement of the sealing strip 3, and the groove 6 has a size width W 2 The depth of the groove 6 is H 2 The shell 1 is provided with n threaded holes (4 in schematic view), the sealing strip 3 is of a size and a width W 3 Thickness H 3 ,H 3 Greater than H 2 To achieve the sealing effect, W 1 Less than or equal to W 2 The cover 2 has the dimensions of length, width and height of L respectively 4 ,W 4 And H 4 The cover 2 is provided with four screw holes4；
The determining module is configured to obtain materials corresponding to the plurality of members based on the three-dimensional structure model and the plurality of members, determine physical properties of the materials corresponding to the plurality of members according to the materials corresponding to the plurality of members, and when the actual physical structure equipment needs to be modeled, first know dimensional parameters of the physical structure, where the dimensional parameters include length, width, height, thickness, and the like of the physical structure, and by collecting the dimensional parameters of the physical structure, a three-dimensional model structure of an actual product can be drawn, where the three-dimensional model structure includes the plurality of members, where each member includes a shell model corresponding to the shell 1, a screw model corresponding to the screw 5, a cover model corresponding to the cover 2, and a seal model corresponding to the seal strip 3, where the groove 6 corresponds to a groove model on the shell model, and the screw hole 4 corresponds to a screw model on the cover model, so that the physical structure is obtained according to the plurality of members, and the physical structure is collected, and the actual experiment cost of the seal strip 3 can be calculated, thereby reducing the number of times of experiments, and the practical material resources can be reduced;
the calculation module is used for calculating the pressure required by meeting the compression amount of the components according to the physical properties of the materials corresponding to the components, and can conveniently grasp the specific change condition of the sealing element model and facilitate the later calculation by calculating the compression amount of the sealing element model and the pressure required by the compression amount of the components, so that the relation between the deformation displacement and the waterproof grade of the cover model is obtained by calculating the model under the condition that the compression amount of the sealing element model is fixed, and further, the data can be optimized to achieve a better sealing effect by model analysis;
the processing module is used for establishing a mechanical model for the component based on the pressure required by the compression amount of the component, carrying out finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component, calculating the deformation amount of the cover model through the model, and optimizing data to achieve a better sealing effect through the model analysis.
The seal computing device based on finite element analysis shown in fig. 6 is merely an example and should not be construed as limiting the functionality and scope of use of embodiments of the present invention in any way.
As shown in fig. 6, the seal computing device based on finite element analysis is in the form of a general purpose computing device. The components of the seal computing device based on finite element analysis may include, but are not limited to: one or more processors or processing units, a memory, a bus that connects the various system components (including the memory and the processing units).
Bus means one or more of several types of bus structures including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include Industry Standard Architecture (ISA) bus, micro channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
Seal computing devices based on finite element analysis typically include a variety of computer system readable media. Such media can be any available media that can be accessed by the seal computing device based on finite element analysis, including volatile and nonvolatile media, removable and non-removable media.
The memory may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and/or cache memory. The seal computing device based on finite element analysis may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, a storage system may be used to read from or write to a non-removable, non-volatile magnetic media (not shown in FIG. 6, commonly referred to as a "hard disk drive"). Although not shown in fig. 6, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be coupled to the bus through one or more data medium interfaces. The memory may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of the embodiments of the invention.
A program/utility having a set (at least one) of program modules may be stored, for example, in a memory, such program modules including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules typically carry out the functions and/or methods of the embodiments described herein.
The finite element analysis-based seal computing device may also communicate with one or more external devices (e.g., keyboard, pointing device, display, etc.), with one or more devices that enable a user to interact with the finite element analysis-based seal computing device, and/or with any device (e.g., network card, modem, etc.) that enables the finite element analysis-based seal computing device to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface. Also, the seal computing device based on finite element analysis may also communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via a network adapter. As shown, the network adapter communicates with other modules of the seal computing device based on finite element analysis via a bus. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in connection with the seal computing device based on finite element analysis, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
The processing unit executes various functional applications and data processing by running a program stored in the memory, for example, implementing the stack splitting processing method provided by any of the embodiments of the present invention. Namely: acquiring a dimension parameter of a physical structure, and determining a three-dimensional structure model of the physical structure based on the dimension parameter of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components; acquiring materials corresponding to the members based on the three-dimensional structure model and the members, and determining physical properties of the materials corresponding to the members according to the materials corresponding to the members; calculating the pressure required for meeting the compression amount of the components according to the physical properties of the materials corresponding to the components; and establishing a mechanical model for the component based on the pressure required by the compression amount of the component, and carrying out finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component.
The embodiment of the invention also provides a computer readable storage medium, in which a program is stored, the program when executed by a processor implements a stack splitting processing method according to any embodiment of the invention, the method comprising:
acquiring a dimension parameter of a physical structure, and determining a three-dimensional structure model of the physical structure based on the dimension parameter of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components;
acquiring materials corresponding to the members based on the three-dimensional structure model and the members, and determining physical properties of the materials corresponding to the members according to the materials corresponding to the members;
calculating the pressure required for meeting the compression amount of the components according to the physical properties of the materials corresponding to the components;
and establishing a mechanical model for the component based on the pressure required by the compression amount of the component, and carrying out finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component.
The computer storage media of embodiments of the invention may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
The computer program code for carrying out operations of the present invention may be written in one or more program computing languages, including an object oriented program computing language such as Java, smalltalk, C ++ and conventional procedural program computing languages, such as the "C" language or similar program computing languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. A method of finite element analysis based seal calculation, the method comprising the steps of:
acquiring a dimension parameter of a physical structure, and determining a three-dimensional structure model of the physical structure based on the dimension parameter of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components;
acquiring materials corresponding to the plurality of components based on the three-dimensional structure model and the plurality of components, and determining physical properties of the materials corresponding to the plurality of components according to the materials corresponding to the plurality of components;
calculating the pressure required for meeting the compression amount of the components according to the physical properties of the materials corresponding to the components;
based on the pressure required by the compression amount of the component, a mechanical model is built for the component, and finite element analysis is carried out on the component according to the mechanical model, so that the deformation amount of the component is obtained;
wherein determining a three-dimensional structural model of the physical structure based on the dimensional parameters of the physical structure comprises:
based on the dimensional parameters of the physical structure, a three-dimensional structure model of the physical structure is assumed, wherein the specific assumption method comprises the following steps:
assume a high H of the shell model 1 At least greater than the thickness H of the cap model 4 Five times or more, the shell model is provided with a groove model;
based on the assumed shell model, the seal model arranged in the groove model is assumed to elastically deform only along the thickness direction of the seal model, the seal model does not deform in the width direction, and the extrusion force of the side wall of the groove model to the width direction of the seal model is zero, wherein the area of the upper surface of the seal model is unchanged and is in contact with the cover model under the acting force of the cover model, the material of the seal model is an elastic rubber material, and the material of the shell model is a rigid material.
2. The finite element analysis based seal computing method of claim 1, wherein the component comprises a screw model, a cap model, a seal model, and a shell model.
3. The finite element analysis-based seal computing method according to claim 1, wherein: the physical properties comprise the elastic modulus E of the sealing element model and the compression quantity a of the sealing element model, wherein the calculation formula of the compression quantity a of the sealing element model is as follows:
wherein: h is the thickness of the sealing element model, and Δh is the thickness of the sealing element model after compression, wherein the compression amount a of the sealing element model is 20-30%.
4. A method of finite element analysis based seal computation according to claim 3, wherein: the calculation formula of the elastic modulus E of the sealing element model is as follows:
wherein sigma is the stress of the sealing element model, epsilon is the deformation of the sealing element model, F is the pressure of the sealing element model, and S is the area of the upper section of the sealing element model.
5. The finite element analysis-based seal computing method of claim 4, wherein: establishing a mechanical model for the component, and carrying out finite element analysis on the component according to the mechanical model to obtain the deformation of the component, wherein the method comprises the following steps:
determining the reaction force F of the cap model based on the pressure F of the seal model 1 Wherein the pressure F of the seal member model and the reaction force F of the cover model 1 Equal;
reaction force F of lid model based on area of upper section of sealing member model 1 And the reaction force F of the cover model is applied along with the external force 1 Wherein the area of the upper cross section of the seal member model is unchanged from the reaction force F of the cap model 1 Is equal to the reaction force F of the cover model 1 Uniformly distributed on the area of the upper section of the sealing element model;
reaction force F based on a cap model 1 Reaction force F of the cap model 1 The deformation of the cap model is calculated as delta.
6. The finite element analysis-based seal computing method of claim 5, wherein: after obtaining the deformation amount of the member, further comprising:
performing a waterproof test on the physical structure, and obtaining a waterproof test result;
based on the waterproof test result, judging whether the physical structure meets the calculated waterproof grade, and if so, verifying the waterproof grade of the sealing member model.
7. A seal computing system based on finite element analysis, characterized by: comprising the following steps:
the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the size parameter of a physical structure and determining a three-dimensional structure model of the physical structure based on the size parameter of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components;
the determining module is used for acquiring materials corresponding to the members based on the three-dimensional structure model and the members, and determining physical properties of the materials corresponding to the members according to the materials corresponding to the members;
a calculation module for calculating a pressure required to satisfy the compression amount of the member according to physical properties of materials corresponding to each of the plurality of members;
the processing module is used for establishing a mechanical model for the component based on the pressure required by the compression amount of the component, and carrying out finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component;
wherein determining a three-dimensional structural model of the physical structure based on the dimensional parameters of the physical structure comprises: based on the dimensional parameters of the physical structure, a three-dimensional structure model of the physical structure is assumed, wherein the specific assumption method comprises the following steps: assuming that the height H1 of the shell model is at least five times greater than the thickness H4 of the cover model, the shell model is provided with a groove model; based on the assumed shell model, the seal model arranged in the groove model is assumed to elastically deform only along the thickness direction of the seal model, the seal model does not deform in the width direction, and the extrusion force of the side wall of the groove model to the width direction of the seal model is zero, wherein the area of the upper surface of the seal model is unchanged and is in contact with the cover model under the acting force of the cover model, the material of the seal model is an elastic rubber material, and the material of the shell model is a rigid material.
8. A seal computing device based on finite element analysis, comprising:
one or more processors;
storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the finite element analysis based seal calculation method of any of claims 1-6.
9. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a program which, when executed by a processor, implements the seal calculation method based on finite element analysis according to any one of claims 1-6.
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