CN114626150A - Analysis method for structural performance of sheet metal part - Google Patents
Analysis method for structural performance of sheet metal part Download PDFInfo
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- CN114626150A CN114626150A CN202210158451.2A CN202210158451A CN114626150A CN 114626150 A CN114626150 A CN 114626150A CN 202210158451 A CN202210158451 A CN 202210158451A CN 114626150 A CN114626150 A CN 114626150A
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Abstract
The embodiment of the application provides an analysis method for structural performance of a sheet metal part, which comprises the following steps: carrying out stamping simulation on the sheet metal part to obtain a stamping simulation model of the sheet metal part; determining thickness change data and plastic strain data of each position of the sheet metal part through the stamping simulation model; determining an initial structural analysis model of the sheet metal part based on the geometric model of the sheet metal part; mapping the thickness change data and the plastic strain data to the initial structure analysis model to obtain a target structure analysis model of the sheet metal part; through target structure analysis model analysis the structural performance of sheet metal component the technical scheme that this application provided can convenient and fast test the sealing performance of crankcase to carry out design optimization to the crankcase. The technical scheme provided by the application can improve the precision of sheet metal component structural analysis to a certain extent, thereby carrying out design optimization on the sheet metal component.
Description
Technical Field
The application relates to the technical field of sheet metal parts, in particular to a method for analyzing structural performance of a sheet metal part.
Background
At present, finite element models established by sheet metal parts are directly subjected to grid division by CAD models, influence brought by the production and manufacturing process is not considered, the sheet metal parts are subjected to stretching and compressing actions in multiple directions in the forming process, the thickness can be obviously changed, and complex changes such as plastic strain, material hardening and phase change can be generated. Various mechanical properties of the formed sheet metal part can be changed, and factors such as residual stress and thickness change have non-negligible influence on various properties of the sheet metal part. The traditional sheet metal part structure performance analysis method does not consider the change of mechanical performance in the sheet metal part forming process, so that the problem of low sheet metal part structure analysis precision exists.
Therefore, a method for analyzing the structural performance of the sheet metal part is urgently needed by those skilled in the art, so that the accuracy of the structural analysis of the sheet metal part can be improved, and the design optimization can be performed on the sheet metal part.
Disclosure of Invention
The embodiment of the application provides an analysis method for the structural performance of a sheet metal part, which can improve the structural analysis precision of the sheet metal part, so that design optimization is carried out on the sheet metal part.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to one aspect of the application, a method for analyzing structural performance of a sheet metal part is provided, and the method comprises the following steps: carrying out stamping simulation on the sheet metal part to obtain a stamping simulation model of the sheet metal part; determining thickness change data and plastic strain data of each position of the sheet metal part through the stamping simulation model; determining an initial structural analysis model of the sheet metal part based on the geometric model of the sheet metal part; mapping the thickness change data and the plastic strain data to the initial structure analysis model to obtain a target structure analysis model of the sheet metal part; and analyzing the structural performance of the sheet metal part through the target structure analysis model.
In some embodiments of the present application, performing stamping simulation on a sheet metal part to obtain a stamping simulation model of the sheet metal part includes: acquiring process flow data and stamping parameter data for stamping the sheet metal part; and carrying out stamping simulation on the sheet metal part according to the process flow data and the stamping parameter data to obtain a stamping simulation model of the sheet metal part.
In some embodiments of the present application, the performing stamping simulation on the sheet metal part according to the process flow data and the stamping parameter data to obtain a stamping simulation model of the sheet metal part includes: acquiring a geometric model of the sheet metal part, and importing the geometric model into stamping analysis software for processing to obtain a die geometric model of the sheet metal part; setting process flow data and stamping parameter data of the sheet metal part in forming process simulation software based on the stamping die model; and according to the process flow data and the stamping parameter data, carrying out stamping simulation on the sheet metal part through the forming process simulation software to obtain a stamping simulation model of the sheet metal part.
In some embodiments of the present application, the determining, by the stamping simulation model, thickness variation data and plastic strain data of each position of the sheet metal part includes: carrying out mesh division on the stamping simulation model to obtain a plurality of meshes; determining thickness variation data and plastic strain data for each location of the sheet metal part defined by the grid.
In some embodiments of the present application, the determining an initial structural analysis model of the sheet metal part based on the geometric model of the sheet metal part includes: meshing the geometric model through structural analysis software; according to the actual stamping working condition, using structural analysis software to correspondingly set the material attribute and the boundary attribute of each grid on the geometric model, and generating an initial structural analysis model of the sheet metal part; wherein the initial structural analysis model is partitioned into at least one mesh.
In some embodiments of the present application, said mapping said thickness variation data and said plastic strain data to said initial structural analysis model to obtain a target structural analysis model of said sheet metal part comprises: and setting thickness change data and plastic strain data of the corresponding position of the sheet metal part in the target grid aiming at each target grid in the initial structure analysis model to obtain the target structure analysis model of the sheet metal part, wherein the target grid is any one of the grids of the initial structure analysis model.
In some embodiments of the present application, the analyzing the structural properties of the sheet metal part by the target structural analysis model includes: modal analysis is carried out on the target structure analysis model through structural analysis software, and the natural frequency of the vibration response of the sheet metal part is predicted according to a modal analysis result; acquiring the maximum displacement of the target structure analysis model under different simulation acting forces through structural analysis software, and carrying out rigidity analysis on the sheet metal part; and acquiring the stress distribution of the target structure analysis model through structural analysis software, and optimizing the structural strength of the sheet metal part according to the stress distribution.
In some embodiments of the present application, said optimizing the structural strength of the sheet metal part according to the stress distribution comprises: obtaining the material yield strength of the sheet metal part; determining the maximum stress and the grid to be reinforced with the maximum stress according to the stress distribution; and according to the material yield strength and the maximum stress, reinforcing the structural strength of the sheet metal part on the grid to be reinforced.
In some embodiments of the present application, the reinforcing the structural strength of the sheet metal part on the grid to be reinforced according to the material yield strength and the maximum stress includes: and if the maximum stress is greater than or equal to the material yield strength, reinforcing the structural strength of the sheet metal part at the position of the grid to be reinforced so as to reduce the maximum stress below the material yield strength.
According to one aspect of the present application, there is provided a computer device comprising one or more processors and one or more memories having stored therein at least one program code, the at least one program code being loaded and executed by the one or more processors to implement the operations performed by the method of analyzing the structural properties of a sheet metal part as set forth.
Based on the scheme, the application has at least the following advantages or progress effects:
according to the analysis method for the structural performance of the sheet metal part, the thickness change data and the plastic strain data of the sheet metal part after stamping forming are obtained through stamping simulation and then mapped into the structural analysis model, the structural performance analysis of the sheet metal part considering stamping mapping is realized, the joint simulation of forming process analysis and structural performance analysis is realized, the structural analysis can be carried out on the sheet metal part based on the stamping forming thickness change and the plastic strain, and therefore the accuracy of the structural analysis of the sheet metal part can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 shows a flow diagram of a method for analyzing structural properties of a sheet metal part in an embodiment of the present application;
FIG. 2 shows a simplified flow chart of a method for analyzing structural properties of a sheet metal part in an embodiment of the present application;
FIG. 3 shows a simplified flow chart of a method for analyzing structural properties of a sheet metal part in an embodiment of the present application;
FIG. 4 shows a simplified flow chart of a method for analyzing structural properties of a sheet metal part in an embodiment of the present application;
FIG. 5 shows a simplified flow chart of a method for analyzing structural properties of a sheet metal part in an embodiment of the present application;
FIG. 6 illustrates a structural analysis software interface diagram in one embodiment of the present application;
FIG. 7 illustrates a graph of the mapping of thickness variation data and plastic strain data on an AutoForm in one embodiment of the present application;
FIG. 8 shows a simplified flow chart of a method of analyzing structural properties of a sheet metal part in one embodiment of the present application;
FIG. 9 shows a first order mode diagram of different structural analysis models in an embodiment of the present application;
FIG. 10 shows a simplified flow chart of a method of analyzing structural properties of a sheet metal part in one embodiment of the present application;
FIG. 11 is a graph illustrating stress profiles of a conventional structural analysis model corresponding to a target structural analysis model in an embodiment of the present application;
fig. 12 shows a schematic structural diagram of a computer system suitable for implementing the analysis method for structural properties of a sheet metal part according to an embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
Next, the present application will be described in detail with reference to the accompanying drawings.
Please refer to fig. 1.
Fig. 1 shows a simplified flowchart of an analysis method for structural properties of a sheet metal part in an embodiment of the present application, which may include steps S101-S105:
and S101, carrying out stamping simulation on the sheet metal part to obtain a stamping simulation model of the sheet metal part.
And S102, determining thickness change data and plastic strain data of each position of the sheet metal part through the stamping simulation model.
And S103, determining an initial structure analysis model of the sheet metal part based on the geometric model of the sheet metal part.
And step S104, mapping the thickness change data and the plastic strain data to the initial structure analysis model to obtain a target structure analysis model of the sheet metal part.
And S105, analyzing the structural performance of the sheet metal part through the target structure analysis model.
According to the method and the device, the thickness change data and the plastic strain data of the sheet metal part after stamping forming can be obtained through stamping simulation, and then the data are mapped to a structural analysis model to generate a target structural analysis model. Therefore, the target structure analysis model has the structural characteristics of the sheet metal part obtained in actual production to a certain extent, and the structural performance of the sheet metal part can be analyzed according to the target structure analysis model, so that the accuracy of sheet metal part structure analysis is effectively improved.
For example, in the conventional method, a structural analysis model a of a sheet metal part is easily obtained, and thickness change data and plastic strain data are not mapped in the structural analysis model a, so that the thickness of each position of the structural analysis model a is not obviously different, and plastic strain basically does not occur in each position, and the structural analysis model a is seriously inconsistent with the sheet metal part obtained in actual production; the structural analysis model B obtained by the method provided by the application is mapped with thickness change data and plastic strain data, and can be attached to the sheet metal part obtained in actual production as far as possible, so that the precision of structural analysis can be effectively improved.
Please refer to fig. 2-4.
Fig. 2 shows a simplified flow diagram of an analysis method for structural performance of a sheet metal part in an embodiment of the present application, where the method for performing stamping simulation on a sheet metal part to obtain a stamping simulation model of the sheet metal part may include steps S201 to S202:
step S201, acquiring process flow data and stamping parameter data for stamping the sheet metal part.
And S202, carrying out stamping simulation on the sheet metal part according to the process flow data and the stamping parameter data to obtain a stamping simulation model of the sheet metal part.
Fig. 3 shows a flow diagram of an analysis method of structural properties of a sheet metal part in an embodiment of the present application. The method for performing stamping simulation on the sheet metal part according to the process flow data and the stamping parameter data to obtain the stamping simulation model of the sheet metal part may include steps S301 to S303:
and S301, acquiring a geometric model of the sheet metal part, and importing the geometric model into stamping analysis software for processing to obtain a die geometric model of the sheet metal part.
Step S302, based on the stamping die model, setting the process flow data and the stamping parameter data of the sheet metal part in the forming process simulation software.
Step S303, according to the process flow data and the stamping parameter data, stamping simulation is carried out on the sheet metal part through the forming process simulation software, and a stamping simulation model of the sheet metal part is obtained.
In the application, stamping simulation can be performed on the sheet metal part in the forming process simulation software AutoForm, so that the stamping simulation model of the sheet metal part is obtained.
In the application, the forming process can comprise drawing forming, local shaping, trimming and rebounding, so that stamping simulation of the sheet metal part is realized, and a stamping simulation model of the sheet metal part is obtained.
Please refer to fig. 4.
Fig. 4 shows a simplified flow chart of an analysis method for structural performance of a sheet metal part in an embodiment of the present application, and the method for determining thickness variation data and plastic strain data of various positions of the sheet metal part through the stamping simulation model may include steps S401 to S402:
step S401, performing mesh division on the stamping simulation model to obtain a plurality of meshes.
Step S402, determining thickness change data and plastic strain data of each position of the sheet metal part defined by the grid.
In the application, the stamping simulation model can be regarded as a sheet metal part obtained through actual production to a certain extent, so that thickness change data and plastic strain data with high reliability can be obtained according to the stamping simulation model. In order to regularly acquire the thickness change data and the plastic strain data, the punching simulation model can be subjected to grid division, the thickness change data and the plastic strain data of the corresponding positions of each grid are respectively acquired, and the corresponding relation of the grid positions can be established with a subsequent structural analysis model.
Please refer to fig. 5-7.
Fig. 5 shows a simplified flowchart of an analysis method for structural performance of a sheet metal part in an embodiment of the present application, and the method for determining an initial structural analysis model of the sheet metal part based on a geometric model of the sheet metal part may include steps S501-S502:
step S501, carrying out meshing on the geometric model through structural analysis software.
And S502, according to the actual stamping working condition, using structural analysis software to correspondingly set the material attribute and the boundary attribute of each grid on the geometric model, and generating an initial structural analysis model of the sheet metal part. Wherein the initial structural analysis model is partitioned into at least one mesh.
In this embodiment, the method for obtaining the target structural analysis model of the sheet metal part by mapping the thickness variation data and the plastic strain data to the initial structural analysis model may include: aiming at each target grid in the initial structure analysis model, the target grid is provided with thickness change data and plastic strain data of corresponding positions of the sheet metal part to obtain the target structure analysis model of the sheet metal part, and the target grid can be any one of grids of the initial structure analysis model.
In the application, various settings such as grid division, material attribute assignment, boundary and working condition setting and the like can be completed under an Abaqus module of structural analysis software Hypermesh, and the structural analysis of the sheet metal part is realized.
For example, referring to FIG. 6, FIG. 6 illustrates a structural analysis software interface diagram in one embodiment of the present application. In fig. 6, a region 601 is an Abaqus module of the structural analysis software HyperMesh, and has already completed various settings such as mesh division, material properties, boundary properties, and operating condition settings of the initial structural analysis model, and 602 is the generated initial structural model.
In the application, the initial structure model can be firstly led into the forming process simulation software Autoform, and then the thickness change mapping and the plastic strain data mapping of the stamping result are completed. The thickness variation data and the plastic strain data acquired from the stamping simulation model can be arranged into a data set, and the mapping of the initial structural analysis model is completed in the form of the data set.
For example, referring to fig. 7, fig. 7 shows a mapping result of thickness variation data and plastic strain data on an AutoForm in an embodiment of the present application. 701 is a plurality of grid numbers, 702 is thickness variation data corresponding to each grid in 701, 703 is a plurality of grid numbers, and 704 is plastic strain data corresponding to each grid in 703.
Please refer to fig. 8 and 9.
Fig. 8 shows a simplified flowchart of an analysis method for structural properties of a sheet metal part in an embodiment of the present application, where the method for analyzing the structural properties of the sheet metal part through the target structure analysis model may include steps S801-S803:
step S801, performing modal analysis on the target structure analysis model through structural analysis software, and predicting the natural frequency of the vibration response of the sheet metal part according to a modal analysis result.
And S802, acquiring the maximum displacement of the target structure analysis model under different simulation acting forces through structural analysis software, and carrying out rigidity analysis on the sheet metal part.
And S803, acquiring the stress distribution of the target structure analysis model through structural analysis software, and optimizing the structural strength of the sheet metal part according to the stress distribution.
In the application, after the target structure analysis model is determined or generated, the structural analysis can be performed on the target structure analysis model, so that the structural analysis is performed on the sheet metal part to a certain extent before actual production is not performed, and the structure of the sheet metal part is optimized.
In the present application, modal analysis may be performed on the target structure analysis model, and a comparison of modal analysis results may be performed with a non-mapping structure analysis model, a mapping-only thickness change structure analysis model, and a mapping-only plastic strain structure analysis model.
For example, FIG. 9 shows a first order mode diagram of different structural analysis models in one embodiment of the present application. As shown in fig. 9, 901 is a first order mode diagram corresponding to a non-mapping structural analysis model, 902 is a first order mode diagram corresponding to a mapping-only thickness variation structural analysis model, 903 is a first order mode diagram corresponding to a mapping-only plastic strain structural analysis model, and 904 is a first order mode diagram corresponding to a target structural analysis model provided by the present application.
The results of the natural frequency analysis corresponding to each model can be shown in table 1.
TABLE 1
From the results shown in table 1, it is not difficult to draw conclusions: when the thickness variation is mapped, the natural frequency of the structural analysis model in the modal analysis process can be reduced, and the plastic strain does not play a role in the modal analysis.
In the application, the target structure analysis model can be subjected to rigidity analysis, and then rigidity analysis results can be compared with a non-mapping structure analysis model, a thickness change only mapping structure analysis model and a plastic strain only mapping structure analysis model.
For example, the maximum displacement (mm) comparison results of the structural analysis models under different simulation forces can be shown in table 2.
TABLE 2
From the results shown in table 2, it is not difficult to draw conclusions: the rigidity of the structural analysis model can be reduced by the stamping mapping thickness change; with the increase of the plastic strain degree, the rigidity of the structural analysis model can be improved by stamping and mapping the plastic strain.
Please refer to fig. 10.
Fig. 10 shows a simplified flowchart of an analysis method for structural performance of a sheet metal part in an embodiment of the present application, where the method for optimizing structural strength of the sheet metal part according to the stress distribution may include steps S1001 to S1003:
and S1001, acquiring the material yield strength of the sheet metal part.
Step S1002, determining the maximum stress and the grid to be reinforced with the maximum stress according to the stress distribution.
And S1003, according to the material yield strength and the maximum stress, reinforcing the structural strength of the sheet metal part on the grid to be reinforced.
In this embodiment, if the maximum stress is greater than or equal to the material yield strength, the structural strength of the sheet metal part at the location of the grid to be reinforced may be reinforced to reduce the maximum stress below the material yield strength.
For example, FIG. 11 shows a stress profile of a conventional structural analysis model corresponding to a target structural analysis model in one embodiment of the present application. Where 1101 is a region where the maximum stress occurs in the conventional structural analysis model of a sheet metal part, and 1102 is a region where the maximum stress occurs in the target structural model of the sheet metal part. In the practical application process of sheet metal parts, the positions with overlarge stress are easy to crack. After the subsequent actual production of the sheet metal part and the bench test on the sheet metal part, the sheet metal part is found to crack at the position corresponding to the 1102 area, so that the accuracy of the target structure analysis model provided by the application is higher than that of the traditional structure analysis model, the corresponding position of the 1102 area can be strengthened, the structural strength is improved, and the quality recall of the sheet metal part after production is avoided.
Please refer to fig. 12.
Referring to fig. 12, fig. 12 is a schematic diagram of a computer system suitable for implementing the analysis method for structural performance of a sheet metal part according to the embodiment of the present application.
It should be noted that the computer system 1200 shown in fig. 12 is only an example, and should not bring any limitation to the function and the scope of the application of the embodiments.
As shown in fig. 12, the computer system 1200 includes a Central Processing Unit (CPU)1201, which can perform various appropriate actions and processes, such as performing the methods described in the above embodiments, according to a program stored in a Read-Only Memory (ROM) 1202 or a program loaded from a storage section 1208 into a Random Access Memory (RAM) 1203. In the RAM 1203, various programs and data necessary for system operation are also stored. The CPU 1201, ROM 1202, and RAM 1203 are connected to each other by a bus 1204. An Input/Output (I/O) interface 1205 is also connected to bus 1204.
The following components are connected to the I/O interface 1205: an input section 1206 including a keyboard, a mouse, and the like; an output section 1207 including a Display device such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and a speaker; a storage section 1208 including a hard disk and the like; and a communication section 1209 including a Network interface card such as a LAN (Local Area Network) card, a modem, and the like. The communication section 1209 performs communication processing via a network such as the internet. A driver 1210 is also connected to the I/O interface 1205 as needed. A removable medium 1211, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like, is mounted on the drive 1210 as necessary, so that a computer program read out therefrom is mounted into the storage section 1208 as necessary.
In particular, according to embodiments of the application, the processes described above with reference to the flow diagrams may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 1209, and/or installed from the removable medium 1211. The computer program executes various functions defined in the system of the present application when executed by a Central Processing Unit (CPU) 1201.
It should be noted that the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. 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 of the computer readable storage medium may include, but are not limited to: 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), a 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 present application, 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. In this application, however, 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 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, wired, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present application may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.
As another aspect, the present application also provides a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device executes the analysis method for the structural performance of the sheet metal part in the embodiment.
As another aspect, the present application also provides a computer-readable medium, which may be contained in the electronic device described in the above embodiments; or may be separate and not incorporated into the electronic device. The computer readable medium carries one or more programs, and when the one or more programs are executed by the electronic device, the electronic device is enabled to implement the analysis method for the structural performance of the sheet metal part in the embodiment.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application. Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A method for analyzing structural properties of a sheet metal part, the method comprising:
carrying out stamping simulation on the sheet metal part to obtain a stamping simulation model of the sheet metal part;
determining thickness change data and plastic strain data of each position of the sheet metal part through the stamping simulation model;
determining an initial structural analysis model of the sheet metal part based on the geometric model of the sheet metal part;
mapping the thickness change data and the plastic strain data to the initial structure analysis model to obtain a target structure analysis model of the sheet metal part;
and analyzing the structural performance of the sheet metal part through the target structure analysis model.
2. The method of claim 1, wherein the step of performing stamping simulation on the sheet metal part to obtain a stamping simulation model of the sheet metal part comprises:
acquiring process flow data and stamping parameter data for stamping the sheet metal part;
and carrying out stamping simulation on the sheet metal part according to the process flow data and the stamping parameter data to obtain a stamping simulation model of the sheet metal part.
3. The method according to claim 2, wherein the step of performing stamping simulation on the sheet metal part according to the process flow data and the stamping parameter data to obtain a stamping simulation model of the sheet metal part comprises:
acquiring a geometric model of the sheet metal part, and importing the geometric model into stamping analysis software for processing to obtain a die geometric model of the sheet metal part;
setting process flow data and stamping parameter data of the sheet metal part in forming process simulation software based on the stamping die model;
and according to the process flow data and the stamping parameter data, carrying out stamping simulation on the sheet metal part through the forming process simulation software to obtain a stamping simulation model of the sheet metal part.
4. The method of claim 1, wherein said determining thickness variation data and plastic strain data for each location of said sheet metal part from said press simulation model comprises:
carrying out mesh division on the stamping simulation model to obtain a plurality of meshes;
determining thickness variation data and plastic strain data for each location of the sheet metal part defined by the grid.
5. The method of claim 1, wherein determining an initial structural analysis model of the sheet metal part based on the geometric model of the sheet metal part comprises:
meshing the geometric model through structural analysis software;
according to the actual stamping working condition, using structural analysis software to correspondingly set the material attribute and the boundary attribute of each grid on the geometric model, and generating an initial structural analysis model of the sheet metal part;
wherein the initial structural analysis model is partitioned into at least one mesh.
6. The method of claim 5, wherein said mapping said thickness variation data and said plastic strain data to said initial structural analysis model to obtain a target structural analysis model of said sheet metal part comprises:
and setting thickness change data and plastic strain data of the corresponding position of the sheet metal part in the target grid aiming at each target grid in the initial structure analysis model to obtain the target structure analysis model of the sheet metal part, wherein the target grid is any one of the grids of the initial structure analysis model.
7. The method of claim 1, wherein said analyzing structural properties of said sheet metal part by said target structural analysis model comprises:
modal analysis is carried out on the target structure analysis model through structural analysis software, and the natural frequency of the vibration response of the sheet metal part is predicted according to a modal analysis result;
acquiring the maximum displacement of the target structure analysis model under different simulation acting forces through structural analysis software, and carrying out rigidity analysis on the sheet metal part;
and acquiring the stress distribution of the target structure analysis model through structural analysis software, and optimizing the structural strength of the sheet metal part according to the stress distribution.
8. The method of claim 7, wherein said optimizing the structural strength of the sheet metal part according to the stress profile comprises:
obtaining the material yield strength of the sheet metal part;
determining the maximum stress and the grid to be reinforced with the maximum stress according to the stress distribution;
and according to the material yield strength and the maximum stress, reinforcing the structural strength of the sheet metal part on the grid to be reinforced.
9. The method of claim 8, wherein said strengthening the structural strength of the sheet metal part on the grid to be strengthened in accordance with the material yield strength and the maximum stress comprises:
and if the maximum stress is greater than or equal to the material yield strength, reinforcing the structural strength of the sheet metal part at the position of the grid to be reinforced so as to reduce the maximum stress below the material yield strength.
10. A computer device, characterized in that the computer device comprises one or more processors and one or more memories having stored therein at least one program code, which is loaded and executed by the one or more processors to carry out the operations executed by the method of analyzing the structural properties of a sheet metal part according to any one of claims 1 to 9.
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| CN115071200A (en) * | 2022-08-24 | 2022-09-20 | 深圳市信润富联数字科技有限公司 | Stamping process and die design method, device, equipment and readable storage medium |
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