CN115795977A - Sealing element calculation method and system based on finite element analysis - Google Patents
Sealing element calculation method and system based on finite element analysis Download PDFInfo
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Abstract
The invention relates to the technical field of sealing element calculation, and discloses a sealing element calculation method and a system based on finite element analysis, wherein the method comprises the following steps: obtaining 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; obtaining materials corresponding to a plurality of components, and determining physical properties of the materials corresponding to the components according to the materials corresponding to the components; calculating the pressure required by meeting the compression amount of the components according to the physical properties of 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 performing 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 sealing element calculation, in particular to a sealing element calculation method, a sealing element calculation system, sealing element calculation equipment and a computer-readable storage medium based on finite element analysis.
Background
The elastic sealing strip, such as rubber, is an elastic material with remarkable elasticity, can greatly change the size of the elastic sealing strip under the action of external force, and can be subjected to large reversible deformation, and the property of the rubber makes the elastic sealing strip become one of main sealing structure materials and can be used as a contact sealing element of any sealing structure.
At present, due to the comprehensive effect of various factors such as the existing materials, manufacturing processes, use environments, cost and the like, the existing sealing elastic strip mostly adopts ethylene propylene diene monomer rubber as a main raw material, and the rubber can block a gap between two sealed surfaces because of the interaction of the rubber on a certain actual contact surface.
At present, experimental detection methods are mostly adopted for detecting the sealing effect and the leakage condition of the sealing device, physical samples need to be processed by the method, the period is long, the cost is high, the scheme is not favorably modified, and the project schedule is influenced.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a sealing element calculation method, a system, equipment and a computer readable storage medium based on finite element analysis, which can reduce the actual experiment times and reduce the cost of manpower and material resources.
In order to solve the above technical problems, the first aspect of the present invention adopts the following basic concept:
a method of seal calculation based on finite element analysis, the method comprising the steps of:
acquiring size parameters of a physical structure, and determining a three-dimensional structure model of the physical structure based on the size parameters of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components;
obtaining a material corresponding to each of the plurality of members based on the three-dimensional structure model and the plurality of members, and determining a physical property of the material corresponding to each of the plurality of members according to the material corresponding to each of the plurality of members;
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 establishing a mechanical model for the component based on the pressure required by the compression amount of the component, and performing 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 aspects, the member includes a screw mold, a cover mold, a seal mold, and a housing mold.
In a preferred embodiment of any of the above solutions, determining a three-dimensional structure model of the physical structure based on the dimensional parameter of the physical structure includes:
and assuming the three-dimensional structure model of the physical structure based on the size parameters of the physical structure, wherein the specific assumption method comprises the following steps:
assume high H of shell model 1 Is far larger than the thickness H of the cover model 4 And at least five times more than the above, a groove model is arranged on the shell model;
based on the assumed housing model, it is assumed that the seal model disposed in the groove model is elastically deformed only in the thickness direction of the seal model, the seal model is not deformed in the width direction, and the pressing 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 not changed and the seal model is in contact with the cap model under the action of the cap model, wherein the material of the seal model is an elastic rubber material, and the material of the housing model is a 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, where the calculation formula of the compression amount a of the seal model is:
In a preferred embodiment of any of the above solutions, the calculation formula of the elastic modulus E of the seal model is:
In a preferred embodiment of any of the above schemes, establishing a mechanical model for the component, and performing finite element analysis on the component according to the mechanical model to obtain a deformation amount of the component includes:
determining the reaction force F of the cap model from the pressure F of the seal model 1 Wherein the pressure F of the seal model and the reaction force F of the cap model 1 Equal;
building a reaction force F of the cap model based on an area of an upper cross-section of the seal model 1 And a reaction force F of the cap model according to the application of the external force 1 Wherein the area of the upper cross section of the seal member model and the reaction force F of the cap model are constant 1 Of the cover model, the reaction force F of the cover model 1 The sealing element is uniformly distributed on the area of the upper section of the sealing element model;
reaction force F based on the cap model 1 And reaction force F of the cap model 1 The deformation quantity of the cover model is calculated to be delta.
In a preferred embodiment of any of the above aspects, after obtaining the deformation amount of the member, the method further includes:
carrying out a waterproof test on the physical structure to obtain 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 so, verifying the waterproof grade of the sealing piece model.
In a second aspect, a finite element analysis based seal calculation system includes:
the device comprises an acquisition module, a display module and a display module, wherein the acquisition module is used for acquiring the size parameters of the physical structure and determining a three-dimensional structure model of the physical structure based on the size parameters of the physical structure, and the three-dimensional structure model is formed by combining a plurality of components;
the determining module is used for acquiring materials corresponding to the components based on the three-dimensional structure model and the components, and determining physical properties of the materials corresponding to the components according to the materials corresponding to the components;
the calculation module is used for calculating the pressure required by meeting the compression amount of the component according to the physical properties of materials corresponding to the components;
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 performing finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component.
In a third aspect, a finite element analysis-based seal computing apparatus, comprises:
one or more processors;
a storage device to store one or more programs that, when executed by the one or more processors, cause the one or more processors to implement the finite element analysis based seal calculation method.
In a fourth aspect, a computer-readable storage medium has stored thereon a program which, when executed by a processor, implements the finite element analysis-based seal calculation method.
Compared with the prior art, the sealing member calculation method based on finite element analysis of the embodiment of the application is based on the pressure required by the compression amount of the member, and is characterized in that a mechanical model is established on the member, so that the physical structure can be conveniently modeled, the mechanical model is right, the finite element analysis is carried out on the member, the deformation amount of the member is obtained, the product can be calculated into an electronic model, and then the electronic model is tested, so that the test times of actual products can be reduced, and the cost of manpower and material resources is reduced.
The following describes 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 embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like 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 illustrating a seal calculation method based on finite element analysis according to an embodiment of the present disclosure.
FIG. 2 is an exploded view of the physical structure of a finite element analysis based seal calculation method according to an embodiment of the present application.
Fig. 3 is a mechanical model diagram of a calculation model of a sealing member calculation method based on finite element analysis according to an embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating a variation of a cap model of a sealing member calculation method based on finite element analysis according to an embodiment of the present application.
FIG. 5 is a schematic diagram of a seal calculation system based on finite element analysis according to an embodiment of the present application.
FIG. 6 is a schematic diagram of a seal calculation device based on finite element analysis according to an embodiment of the present application.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it to those skilled in the art by reference to a particular embodiment, the elements of which are schematic and not drawn to scale.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the described embodiments are merely exemplary of some, and not all, of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. 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.
The following examples of the present application illustrate the solution of the present application in detail by taking a seal calculation method based on finite element analysis as an example, but the scope of the present application is not limited by the examples.
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: the method comprises the steps of obtaining size parameters of a physical structure, and determining a three-dimensional structure model of the physical structure based on the size parameters of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components.
In the finite element analysis-based sealing member calculation method according to the embodiment of the present invention, the physical structure includes a housing 1, a cover 2 and a sealing strip 3, the housing 1 and the cover 2 are sealed by the sealing strip 3, a plurality of screw holes 4 are provided in the cover 2, and then screws 5 are inserted through the screw holes 4 to connect the housing 1 and the cover 2, wherein the top of the housing 1 has a groove 6 for placing the sealing strip 3, wherein the sealing strip 3 is made of a rubber material, and thus the sealing strip 3 is made of a rubber material, so that the sealing member calculation method according to the embodiment of the present invention is capable of calculating the sealing member calculation method based on the finite element analysis, and the physical structure includes the housing 1, the cover 2 and the cover 2, and the housing 1 and the cover 2 are sealed by the sealing strip 3, and the screw 5 is connected by the screw holes 4, wherein the housing 1 and the cover 2 are provided with a plurality of screw holes 6, and the sealing strip 3 is provided on the cover 2, and the housing 1 and the sealing strip 3 is made of a rubber material, and the sealing member calculation method is made of the rubber material, and the sealing strip 3, and the sealing member calculation method is capable of calculating the present inventionIt has elasticity and can play a role of sealing, wherein the size, the length, the width and the height of the shell 1 are respectively L 1 ,W 1 And H 1 The contact surface of the shell 1 and the cover 2 is provided with a groove 6 so as to be convenient for placing the sealing strip 3, and the width of the groove 6 is W 2 The depth of the groove 6 is H 2 The shell 1 is provided with n threaded holes (the schematic diagram is 4), and the sealing strip 3 has the size and the width of W 3 Thickness of H 3 ,H 3 Greater than H 2 To achieve a sealing effect, W 1 W is not more than W 2 The length, width and height of the cover 2 are 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, width, height, thickness and the like of the physical structure, and a three-dimensional model structure of an actual product can be drawn by collecting the various dimensional parameters of the physical structure, wherein the three-dimensional model structure includes a plurality of components, wherein each component 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 sealing member model corresponding to the sealing strip 3, wherein the groove 6 corresponds to a groove model on the shell model, and the screw hole 4 corresponds to a screw hole model on the cover model, so that the physical structure can be tested according to the plurality of components, and the size of the sealing member model can be calculated, so that the actual corresponding sealing strip 3 can be produced according to the calculated sealing member model, thereby the number of tests of the actual product can be reduced, and the cost of manpower and material resources can be reduced.
In another optional embodiment of the present application, determining a three-dimensional structure model of the physical structure based on the dimensional parameters of the physical structure comprises:
step 11: and assuming the three-dimensional structure model of the physical structure based on the dimension parameters of the physical structure, wherein the specific assumption method comprises the following steps:
step 12: assume high H of shell model 1 Is far larger than the thickness H of the cover model 4 At least five times as many as the shell model, a groove model is arranged on the shell model;
step 13: based on the assumed housing model, it is assumed that the seal model disposed in the groove model is elastically deformed only in the thickness direction of the seal model, the seal model is not deformed in the width direction, and the pressing 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 not changed and the seal model is in contact with the cap model under the action of the cap model, wherein the material of the seal model is an elastic rubber material, and the material of the housing model is a rigid material.
In the seal calculation method based on finite element analysis according to the embodiment of the present invention, when modeling, the height H of the casing 1 is assumed 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 of the shell 1 is not considered, the deformation condition of the sealing strip 3 is simplified, only the elastic deformation in the thickness direction of the sealing strip 3 is considered, the deformation in the width direction is not considered, the extrusion of the inner wall of the groove 6 to the two sides of the sealing strip 3 in the width direction is not considered, the area of the upper surface of the sealing strip 3 is considered to be unchanged under the action force of the cover 2 and is always contacted with the cover, the sealing strip 3 is made of 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 rich in elasticity at room temperature, can generate large deformation under the action of small external force, and can recover the original shape after the external force is removed, wherein the Rubber belongs to a completely amorphous polymer, has low glass transition temperature and large molecular weight which is more than hundreds of thousands, is divided into two types of natural Rubber and synthetic Rubber, and is prepared by extracting colloid from plants such as Rubber trees, rubber grasses and the like and then processing the extracted colloid; synthetic rubbers are obtained by polymerizing various monomers, wherein natural rubber is produced from latex, in which a portion of the non-rubber components contained in the latex remains in the solid natural rubber, and generally the natural rubber contains 92% to 95% rubber hydrocarbons, while the non-rubber hydrocarbons are present in an amount of 5% to 8%.
Because of different preparation methods, different production places and different rubber collection seasons, the proportions of the components can be different, but are basically 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 formation of the rubber, the insulation performance of the rubber is reduced, the protein also has the defect of increasing heat generation, acetone extract is a plurality of higher fatty acids and sterol substances, wherein some of the higher fatty acids and sterol substances play the roles of natural anti-aging agents and accelerators, and can also help powdery compounding agents to disperse in the mixing process and soften the raw rubber, salts such as magnesium phosphate, calcium phosphate and the like are mainly contained in ash, and a small amount of metal compounds such as copper, manganese, iron and the like are contained, because the variable valence metal ions can promote the aging of the rubber, the moisture in the dry rubber is not more than 1 percent and can volatilize in the processing process, but when the moisture content is too much, not only the raw rubber is easy to mildew in the storage process, but also the processing of the rubber is influenced, and the compounding agents are easy to agglomerate in the mixing process; air bubbles are easily generated in the rolling and extruding processes, and air bubbles are generated or are in a spongy shape in the vulcanizing process.
The general rubber has good comprehensive performance and wide application range, and mainly comprises the following components: (1) natural rubber, made from latex of Hevea brasiliensis, is cis-polyisoprene, a basic chemical component. Good elasticity, high strength and good comprehensive performance. (2) Isoprene rubber, known collectively as cis-1, 4-polyisoprene rubber, is a high cis synthetic rubber made from isoprene and is also known as synthetic natural rubber because its structure and properties are similar to those of natural rubber. (3) Styrene butadiene rubber, SBR for short, is made by copolymerizing butadiene and styrene. It is divided into emulsion polymerized styrene butadiene rubber and solution polymerized styrene butadiene rubber according to the production method. The combination property and chemical stability are good. (4) Butadiene rubber, a full name of cis-1, 4-polybutadiene rubber, abbreviated as BR, is prepared by polymerizing butadiene. Compared with other general-purpose rubbers, the vulcanized butadiene rubber has particularly excellent cold resistance, wear resistance and elasticity, generates less heat under dynamic load, has good aging 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, it has a high density, is easily crystallized and hardened at normal temperature, and has poor storage properties and poor cold resistance.
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: obtaining a material corresponding to each of the plurality of members based on the three-dimensional structure model and the plurality of members, and determining a physical property of the material corresponding to each of the plurality of members according to the material corresponding to each of the plurality of members;
and step 3: and calculating the pressure required by meeting the compression amount of the components according to the physical properties of the materials corresponding to the components.
In the method for calculating a seal based on finite element analysis according to an embodiment of the present invention, in the three-dimensional structure model, in order to further calculate the seal more accurately, it is necessary to know the material and the physical properties of the material corresponding to each of the members, so that the analysis can be performed according to the stress condition of the members, where in the embodiment of the present invention, the physical properties include an elastic modulus E of the seal model and a compression amount a of the seal model, where a calculation formula of the compression amount a of the seal 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:
and 4, step 4: establishing a mechanical model for the component based on the pressure required by the compression amount of the component, and performing finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component, wherein the method specifically comprises the following steps:
step 41: determining the reaction force F of the cap model from the pressure force F of the seal model 1 Wherein the pressure F of the seal model and the reaction force F of the cover model 1 Equal;
step 42: building a reaction force F of the cap model based on an area of an upper cross-section of the seal model 1 And a reaction force F of the cap model according to the application of the external force 1 Is constant, wherein the area of the upper cross-section of the seal model and the reaction force F of the cap model are constant 1 Of the cover model, the reaction force F of the cover model 1 The sealing element is uniformly distributed on the area of the upper section of the sealing element model;
step 43: reaction force F based on the cap model 1 And reaction force F of the cap model 1 The deformation quantity of the cover model is calculated to be delta.
In the sealing element calculation method based on finite element analysis, a mechanical model is established for the component, the deformation quantity of the cover model is calculated, the specific change condition of the cover model can be conveniently mastered, and the later calculation is convenient, so that the deformation quantity of the cover model is obtained through model calculation, and further, data can be optimized, and a better sealing effect can be achieved through 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:
and 5: carrying out 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 resist the influence of liquid water flowing or falling on the basin in the using process;
step 6: judging whether the physical structure meets the calculated waterproof grade or not based on the waterproof test result, and if so, verifying the waterproof grade of the sealing element model, wherein when a water pressure resistance performance test is carried out, the physical structure is immersed in a container containing water after being installed, a pressure value which is the same as an overpressure mark value is applied within 1 minute, if the watch pressurization value without the overpressure mark is 2 multiplied by 100K Pa (2 Bar), the watch pressurization value is kept for 10 minutes, and then the pressure is reduced to the ambient pressure within 1 minute;
and 7: or, under the condition of meeting the economic and use requirements, the sealing member calculation method in the steps 1 to 4 is popularized to other physical structures with the same sealing grade requirement, if the deformation quantity of a cover model of other physical structures through finite element analysis is delta, the waterproof requirement of the same grade can be considered to be met, waterproof experimental verification is not needed, and if the requirement is not met, the calculation optimization of the method can be repeated.
As shown in fig. 5, a seal calculation system based on finite element analysis includes:
the acquisition module is used for acquiring the size parameters of the physical structure and determining the three-dimensional structure model of the physical structure based on the size parameters of the physical structure, wherein 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, the cover 2 is provided with a plurality of screw holes 4, and then the three-dimensional structure model is determined by the acquisition moduleThe rear screw 5 passes through the screw hole 4 to connect the shell 1 with 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 material, so that the sealing strip has elasticity and can play a role of sealing, wherein the size, the length, the width and the height of the shell 1 are respectively L 1 ,W 1 And H 1 The contact surface of the shell 1 and the cover 2 is provided with a groove 6 so as to be convenient for placing the sealing strip 3, and the width of the groove 6 is W 2 The depth of the groove 6 is H 2 The shell 1 is provided with n threaded holes (the schematic diagram is 4), and the sealing strip 3 has the size and the width of W 3 Thickness of H 3 ,H 3 Greater than H 2 To achieve a sealing effect, W 1 W is not more than W 2 The length, width and height of the cover 2 are L respectively 4 ,W 4 And H 4 The cover 2 is provided with four screw holes 4;
a determining module, configured to obtain a material corresponding to each of the plurality of members based on the three-dimensional structure model and the plurality of members, determine a physical property of the material corresponding to each of the plurality of members according to the material corresponding to each of the plurality of members, and when it is required to model the actual physical structure equipment, it is required to know a dimensional parameter of the physical structure first, where the dimensional parameter includes a length, a width, a height, a thickness, and the like of the physical structure, and draw a three-dimensional model structure of an actual product by collecting the dimensional parameter of the physical structure, where the three-dimensional model structure includes a 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 3, where the groove 6 corresponds to a groove model on the shell model, and the screw hole 4 corresponds to a screw hole model on the cover model, so that the physical structure can be tested according to the plurality of members, thereby calculating a size of the seal model, and thereby reducing a cost of the seal produced according to the calculated number of actual seal, thereby reducing a cost of the seal for the seal;
the calculation module is used for calculating the pressure required by the compression amount of the member according to the physical properties of the materials corresponding to the members, and the specific change condition of the sealing member model can be conveniently mastered and the later calculation is convenient by calculating the compression amount of the sealing member model and the pressure required by the compression amount of the member, so that the relation between the deformation displacement and the waterproof grade of the cover model is obtained by model calculation under the condition that the compression amount of the sealing member model is constant, and the data can be optimized to achieve a better sealing effect through model analysis;
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, performing finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component, and obtaining the deformation amount of the cover model through model calculation, so that data can be optimized and a better sealing effect can be achieved through model analysis.
The finite element analysis based seal calculation apparatus shown in FIG. 6 is merely an example and should not impose any limitations on the functionality or scope of use of embodiments of the present invention.
As shown in fig. 6, the finite element analysis based seal calculation device is embodied in the form of a general purpose computing device. The components of the finite element analysis based seal computing device may include, but are not limited to: one or more processors or processing units, memory, and a bus connecting the various system components (including the memory and processing units).
A bus represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, 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.
Finite element analysis based seal computing equipment typically includes a variety of computer system readable media. These media may be any available media that can be accessed by the finite element analysis based seal computing device, including volatile and non-volatile 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 finite element analysis based seal computing device may further include other removable/non-removable, volatile/non-volatile computer system storage media. By way of example only, the storage system may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 6, commonly referred to as a "hard drive"). Although not shown in FIG. 6, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to the bus by one or more data media interfaces. The memory may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility having a set (at least one) of program modules may be stored, for example, in the memory, such program modules including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination may comprise an implementation of a network environment. The program modules generally perform the functions and/or methodologies of the described embodiments of the invention.
The finite element analysis-based seal computing device can 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 finite element analysis based seal computing device 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 finite element analysis based seal computing device via a bus. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the finite element analysis based seal computing device, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processing unit executes programs stored in the memory to perform various functional applications and data processing, such as implementing the stack splitting processing method provided by any embodiment of the present invention. Namely: acquiring size parameters of a physical structure, and determining a three-dimensional structure model of the physical structure based on the size parameters of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components; obtaining a material corresponding to each of the plurality of members based on the three-dimensional structure model and the plurality of members, and determining a physical property of the material corresponding to each of the plurality of members according to the material corresponding to each of the plurality of members; calculating the pressure required by meeting the compression amount of the components according to the physical properties of 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 performing finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component.
An embodiment of the present invention further provides a computer-readable storage medium, in which a program is stored, and when the program is executed by a processor, the method for processing stack splitting according to any embodiment of the present invention is implemented, where the method includes:
acquiring size parameters of a physical structure, and determining a three-dimensional structure model of the physical structure based on the size parameters of the physical structure, wherein the three-dimensional structure model is formed by combining a plurality of components;
obtaining a material corresponding to each of the plurality of members based on the three-dimensional structure model and the plurality of members, and determining a physical property of the material corresponding to each of the plurality of members according to the material corresponding to each of the plurality of members;
calculating the pressure required by meeting the compression amount of the components according to the physical properties of 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 performing finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component.
Computer storage media for embodiments of the invention may employ 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. A 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 the context of 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.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may 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.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more procedural computing languages, including an object oriented procedural computing language, such as Java, smalltalk, C + +, and conventional procedural computing languages, such as the "C" programming language or similar procedural 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 type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made 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 used for illustrating the technical solutions 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 solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A method of seal calculation based on finite element analysis, the method comprising the steps of: a method of seal calculation based on finite element analysis, the method comprising the steps of:
acquiring size parameters of a physical structure, and determining a three-dimensional structure model of the physical structure based on the size parameters 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 members respectively based on the three-dimensional structure model and the plurality of members, and determining physical properties of the materials corresponding to the plurality of members respectively according to the materials corresponding to the plurality of members respectively;
calculating the pressure required by meeting the compression amount of the components according to the physical properties of 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 performing finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component.
2. A seal calculation method based on finite element analysis according to claim 1, characterized in that the components comprise a screw model, a lid model, a seal model and a shell model.
3. A seal calculation method based on finite element analysis according to claim 2, wherein: determining a three-dimensional structure model of a physical structure based on dimensional parameters of the physical structure, comprising:
based on the size parameters of the physical structure, the three-dimensional structure model of the physical structure is assumed, wherein the specific assumption method comprises the following steps:
assume high H of shell model 1 At least greater than the thickness H of the cap model 4 More than five times, a groove model is arranged on the shell model;
based on the assumed shell model, it is assumed that the seal model disposed in the groove model elastically deforms only in the thickness direction of the seal model, the seal model does not deform in the width direction, and the side wall of the groove model generates zero extrusion force in the width direction of the seal model, wherein under the action force of the cover model, the area of the upper surface of the seal model is unchanged and the seal model contacts with the cover model, wherein the seal model is made of an elastic rubber material, and the shell model is made of a rigid material.
4. A seal calculation method based on finite element analysis according to claim 3, wherein: the physical properties comprise an elastic modulus E of a seal model and a compression amount a of the seal model, wherein the calculation formula of the compression amount a of the seal model is as follows:
wherein: h is the thickness of the sealing element model, and delta h is the thickness of the compressed sealing element model, wherein the value range of the compression amount a of the sealing element model is 20-30%.
5. A seal calculation method based on finite element analysis according to claim 4, wherein: the calculation formula of the elastic modulus E of the sealing element model is as follows:
wherein σ is the stress of the seal model, ε is the deformation of the seal model, F is the pressure of the seal model, and S is the area of the upper section of the seal model.
6. A seal calculation method based on finite element analysis according to claim 5, wherein: establishing a mechanical model for the component, and performing finite element analysis on the component according to the mechanical model to obtain the deformation quantity 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 cap model 1 Equal;
reaction force F for constructing cover model based on area of upper section of sealing element model 1 And reaction force F of the cap model according to the application of the external force 1 The active area of (a) is not changed, wherein,area of upper section of seal member mold and reaction force F of cap mold 1 Are equal in the area of action of the lid model, the reaction force F of the lid model 1 Uniformly distributed on the area of the upper section of the sealing element model;
reaction force F based on cap model 1 And reaction force F of the cap model 1 The deformation amount of the cover model is calculated to be delta.
7. A seal calculation method based on finite element analysis according to claim 6, wherein: after the deformation amount of the member is obtained, the method further comprises the following steps:
carrying out 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 so, verifying the waterproof grade of the sealing piece model.
8. A seal calculation system based on finite element analysis, characterized by: the method comprises the following steps:
the device comprises an acquisition module, a display module and a display module, wherein the acquisition module is used for acquiring the size parameters of the physical structure and determining a three-dimensional structure model of the physical structure based on the size parameters of the physical structure, and the three-dimensional structure model is formed by combining a plurality of components;
the determining module is used for acquiring materials corresponding to the plurality of members based on the three-dimensional structure model and the plurality of members, and determining physical properties of the materials corresponding to the plurality of members according to the materials corresponding to the plurality of members;
the calculation module is used for calculating the pressure required by meeting the compression amount of the component according to the physical properties of materials corresponding to the components;
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 performing finite element analysis on the component according to the mechanical model to obtain the deformation amount of the component.
9. A finite element analysis-based seal computing apparatus, comprising:
one or more processors;
a storage device to store one or more programs that, 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 1-7.
10. A computer-readable storage medium, characterized in that a program is stored in the computer-readable storage medium, which program, when being executed by a processor, carries out a finite element analysis based seal calculation method according to any one of claims 1 to 7.
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