Part lightweight topology method and device
Through static simulation and topological simulation, the part design is optimized, and the problems of high requirements for designer design capabilities and experience in the existing technology are solved, and the efficiency and cost optimization of lightweight parts design are achieved.
Patent Information
- Application Number
- CN202310925842.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-26
- Publication Date
- 2025-02-11
AI Technical Summary
The existing lightweight design solutions for parts have high requirements for designers' design capabilities and experience, resulting in large design workloads and high costs.
By determining the target part and its associated parts, performing a first static simulation, removing nonlinear parameters, performing a second static simulation, adjusting the parameters until the result is within the preset error range, and finally topological simulation is performed to optimize the part design.
It reduces the number of modifications to lightweight parts design, reduces the dependence on designer design capabilities and experience, increases the probability that the design meets actual requirements, and reduces design costs.
Smart Images
Figure CN119416412A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of mechanical design technology, and in particular to a parts lightweight topology method, device, equipment and storage medium. Background Art
[0002] There are two commonly used lightweight design schemes for parts. The first scheme is to modify the parts based on experience, produce the modified parts, evaluate the superiority of the design of the parts by conducting the integrity verification of the machine tool, and then make corresponding adjustments to the design of the parts until they meet the requirements; the second scheme is to modify the parts based on experience, compare the superiority of the structure through modal analysis in finite element simulation, and then modify the parts according to the modal analysis results. The above method for lightweight design of parts requires high design ability and experience of the designer. If the design ability and experience of the designer are slightly insufficient, the designed sample parts do not meet the actual needs when the integrity verification of the machine tool is carried out. In this case, the design of the sample parts needs to be modified many times, and the modified sample parts are then verified for the integrity of the machine tool. If the modified sample parts still do not meet the actual needs, the design of the sample parts needs to be repeatedly changed and the integrity verification of the machine tool needs to be carried out until the sample parts meet the actual needs, which wastes a lot of manpower, material and financial resources and has high design costs. Summary of the invention
[0003] The present invention provides a topological method and device for lightweight parts, which solves the technical problems that the existing lightweight design schemes for parts have high requirements on the design ability and experience of designers, the workload of lightweight design for parts is large, and the cost is high.
[0004] A first aspect of the present invention provides a method for lightweight topology of a part, comprising:
[0005] S1: Determine the target part and its associated parts to be topologically optimized;
[0006] S2: performing a first statics simulation on the target part and the associated parts to obtain a first statics simulation result;
[0007] S3: removing nonlinear parameters from original statics simulation parameters of the first statics simulation to obtain target statics simulation parameters;
[0008] S4: performing a second statics simulation on the target part and the associated parts based on the target statics simulation parameters to obtain a second statics simulation result;
[0009] S5: determining whether the second statics simulation result and the first statics simulation result are within a preset error range; if so, outputting the second statics simulation result as a target statics simulation result; otherwise, adjusting the target statics simulation parameters and returning to step S4;
[0010] S6: Performing topological simulation on the target part based on the target statics simulation result.
[0011] Optionally, step S2 specifically includes:
[0012] Acquire actual data of the target part and the associated parts, wherein the actual data includes actual working condition data and actual contact condition data between parts;
[0013] A first statics simulation is performed on the target part and the associated part based on the actual data to obtain a first statics simulation result.
[0014] Optionally, in step S5, judging whether the second statics simulation result and the first statics simulation result are within a preset error range specifically includes:
[0015] Based on the first deformation cloud map in the second statics simulation result and the second deformation cloud map in the first statics simulation result, it is determined whether the similarity between the deformation directions of each location on the part of the first deformation cloud map and the second deformation cloud map is not less than a first similarity threshold, and whether the similarity between the color block shapes of each area on the part of the first deformation cloud map and the second deformation cloud map is not less than a second similarity threshold.
[0016] Optionally, step S6 specifically includes:
[0017] S6-1: dividing the structure of the target part into an unmodifiable structure and a modifiable structure based on the target statics simulation result;
[0018] S6-2: defining topology optimization objectives and constraints for the modifiable structure of the target part, and performing topology simulation based on the topology optimization objectives and constraints.
[0019] Optionally, step S6-2 specifically includes:
[0020] S6-2-1: Setting mass minimization as a topology optimization goal on the modifiable structure of the target part, and defining symmetry constraints and deformation constraints;
[0021] S6-2-2: Perform topology simulation based on the topology optimization objectives, symmetry constraints and deformation constraints.
[0022] Optionally, after step S6, the following steps are further included:
[0023] S7: Determine whether the obtained topological simulation result meets the preset processing requirements. If so, output the topological simulation result. Otherwise, add manufacturing constraints to the modifiable structure of the target part and return to step S6-2-2.
[0024] S8: modifying the original part design model of the target part based on the topology simulation result outputted in step S7 to obtain a new part design model;
[0025] S9: Performing dynamic simulation verification on the new part design model to determine whether the new part design model meets the preset usage requirements. If so, outputting the current new part design model.
[0026] Optionally, step S9 further includes:
[0027] If the new part design model does not meet the preset usage requirements, determine whether the difference between the dynamic simulation verification result and the preset usage requirements is greater than the preset difference threshold. If so, modify the constraint conditions used in the topological simulation of the target part and return to step S6-2-2. Otherwise, directly modify the current new part design model so that the dynamic simulation verification result of the new part design model meets the preset usage requirements.
[0028] Optionally, directly modifying the current new part design model so that the dynamics simulation verification result of the new part design model meets the preset use requirements includes:
[0029] The structural features in the current new part design model that do not meet the preset use requirements are thickened and / or enlarged so that the dynamic simulation verification result of the new part design model meets the preset use requirements.
[0030] Optionally, modifying the constraint conditions used when performing topological simulation on the target part includes:
[0031] The deformation constraint value in the constraint condition used when performing topological simulation on the target part is reduced in proportion.
[0032] A second aspect of the present application provides a parts lightweight topological device, comprising:
[0033] The front module is used to determine the target parts and their associated parts to be topologically optimized;
[0034] A first simulation module, used for performing a first statics simulation on the target part based on the target part and the associated parts to obtain a first statics simulation result;
[0035] A simulation parameter processing module, used to remove nonlinear parameters in original statics simulation parameters of the first statics simulation to obtain target statics simulation parameters;
[0036] A second simulation module, used for performing a second statics simulation on the target part based on the target statics simulation parameters to obtain a second statics simulation result;
[0037] a judgment module, used for judging whether the second statics simulation result and the first statics simulation result are within a preset error range, and if so, outputting the second statics simulation result as a target statics simulation result; otherwise, adjusting the target statics simulation parameters and returning to execute the second simulation module;
[0038] A topology simulation module is used to perform topology simulation on the target part based on the target statics simulation result.
[0039] It can be seen from the above technical solutions that the parts lightweight topology method and device provided by the present invention have the following advantages:
[0040] The method and device for topological calculation of lightweight parts provided by the present invention perform a first statics simulation according to the target part to be topologically calculated and its associated parts, remove all nonlinear parameters in the original statics simulation parameters used in the first statics simulation, obtain the target statics simulation parameters, perform a second statics simulation based on the target statics simulation parameters, obtain the second statics simulation results, if the two simulation results are not within the preset error range, adjust the target statics simulation parameters and re-perform the secondary statics simulation until the two simulation results are within the preset error range, if the two simulation results are within the preset error range, output the second statics simulation results as the target statics simulation results, and perform topological simulation on the target part based on the target statics simulation results. The present invention can improve the probability that the lightweight design of parts meets the actual requirements by performing the first statics simulation and the second statics simulation, thereby reducing the number of modifications to the sample part design, and does not need to rely on the designer's design ability and experience to modify the parts to perform lightweight topology, solving the technical problems that the existing lightweight design scheme of parts has high requirements on the designer's design ability and experience, the lightweight design of parts has a large workload, and the cost is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0042] Figure 1 A schematic flow chart of a method for lightweight topology of parts provided in an optional embodiment of the present invention;
[0043] Figure 2 A schematic flow chart of steps S6-S9 of a method for lightweight topology of a part provided in another optional embodiment of the present invention;
[0044] Figure 3 A structural connection block diagram of a parts lightweight topology device provided for an optional embodiment of the present invention. DETAILED DESCRIPTION
[0045] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0046] For easier understanding, see Figure 1 The present invention provides an embodiment of a parts lightweight topology method, comprising:
[0047] Step S1: Determine the target part and its associated parts to be topologically optimized.
[0048] It should be noted that the associated parts of the target part include a first associated part and a second associated part. The first associated part is a part that contacts the target part but has an unclear force on the target part, and the second associated part is a part that can affect the structural stiffness of the target part.
[0049] As an implementation method, a part that needs to be topologically processed may be selected as the target part according to the stress cloud map.
[0050] If the magnitude and direction of the force acting on the part relative to the target part are known, the part can be simplified into a clear load. If the specific magnitude and distribution of the force acting on the part relative to the target part are unclear, it cannot be simplified into a clear load. In this case, the part can be regarded as the first associated part of the target part.
[0051] Step S2: performing a first statics simulation on the target part and the associated parts to obtain a first statics simulation result.
[0052] It should be noted that actual data of the target part and its associated parts are obtained, the actual data including actual working condition data and actual contact condition data between parts, and static simulation of the target part and the associated parts assembly is performed based on the actual data.
[0053] By performing static simulation on the target part and its associated parts, the correct stress and deformation trends can be obtained. As a specific implementation method, when performing static simulation, a "beam unit" can be used to simulate the bolt connection, and the contact surface is set to rough contact, that is, the parts can be separated from each other but cannot slide relative to each other.
[0054] Step S3: removing nonlinear parameters from original statics simulation parameters of the first statics simulation to obtain target statics simulation parameters.
[0055] It should be noted that all nonlinear parameters in the statics simulation parameters used in step S2 are removed to obtain the target statics simulation parameters.
[0056] Step S4: performing a second statics simulation on the target part and the associated parts based on the target statics simulation parameters to obtain a second statics simulation result.
[0057] In the embodiment of the present invention, statics simulation is performed on a combination of a target part, a first associated part and a second associated part based on target statics simulation parameters. The target statics simulation parameters remove all nonlinear parameters, which helps to reduce simulation calculation costs.
[0058] Step S5: Determine whether the second statics simulation result and the first statics simulation result are within a preset error range. If so, output the second statics simulation result as the target statics simulation result. Otherwise, adjust the target statics simulation parameters and return to step S4.
[0059] It should be noted that after obtaining the second statics simulation result and the first statics simulation result, the second statics simulation result is compared with the first statics simulation result to determine whether the deviation between the second statics simulation result and the first statics simulation result is within a preset error range. If so, the second statics simulation result is output as the target statics simulation result. Otherwise, the target statics simulation parameters are adjusted and return to step S4.
[0060] The execution flow chart of step S5 is as follows: Figure 2 shown.
[0061] In an achievable manner, the determining whether the second statics simulation result and the first statics simulation result are within a preset error range specifically includes:
[0062] Based on the first deformation cloud map in the second statics simulation result and the second deformation cloud map in the first statics simulation result, it is determined whether the similarity between the deformation directions of each location on the part of the first deformation cloud map and the second deformation cloud map is not less than a first similarity threshold, and whether the similarity between the color block shapes of each area on the part of the first deformation cloud map and the second deformation cloud map is not less than a second similarity threshold.
[0063] As an implementation method, the first similarity threshold is set to 70%, and the second similarity threshold is set to 50%. That is, when the deformation cloud map in the obtained static simulation result is compared with the deformation cloud map in the actual static simulation result, although the deformation values of the two at each location on the part are not necessarily the same, if the following two conditions are met, it means that the two results meet the preset deformation trend consistency requirements:
[0064] (1) The directional similarity of the deformation at each location on the two parts is not less than 70%;
[0065] (2) The similarity of the shapes of the color blocks in each region of the parts in the two cloud images is greater than or equal to 50%.
[0066] Step S6: performing topological simulation on the target part based on the target statics simulation result.
[0067] The part lightweight topology method provided in the embodiment of the present invention performs a first statics simulation according to the target part to be topologically modified and its associated parts, removes all nonlinear parameters in the original statics simulation parameters used in the first statics simulation, obtains the target statics simulation parameters, performs a second statics simulation based on the target statics simulation parameters, obtains the second statics simulation results, if the two simulation results are not within the preset error range, adjusts the target statics simulation parameters and re-performs the secondary statics simulation until the two simulation results are within the preset error range, if the two simulation results are within the preset error range, outputs the second statics simulation results as the target statics simulation results, and performs topology simulation on the target part based on the target statics simulation results. The present invention does not need to rely on the designer's design ability and experience to modify the parts to perform lightweight topology, and solves the technical problems that the existing part lightweight design scheme has high requirements on the designer's design ability and experience, the part lightweight design workload is large, and the cost is high.
[0068] See also Figure 2 In one achievable manner, the performing topological simulation on the target part based on the target statics simulation result includes:
[0069] S6-2-1: dividing the structure of the target part into an unmodifiable structure and a modifiable structure based on the target statics simulation result;
[0070] S6-2-2: Define topology optimization objectives and constraints for the modifiable structure of the target part, and perform topology simulation based on the topology optimization objectives and constraints.
[0071] In an embodiment of the present invention, the structure of the target part is divided into an unmodifiable structure and a modifiable structure, the unmodifiable structure of the target part is removed, and topological optimization objectives and constraints are defined based on the modifiable structure of the target part to perform topological simulation, which can effectively reduce the workload of lightweight design of parts.
[0072] The topology optimization goal and constraint conditions can be set according to the specific requirements of the part design. In one achievable manner, the topology optimization goal and constraint conditions defined for the modifiable structure of the target part include:
[0073] Mass minimization is set as a topology optimization goal on the modifiable structure of the target part, and symmetry constraints and deformation constraints are defined.
[0074] The deformation constraint is the deformation of the contact surface of each part, and the allowable value of the deformation can be set according to the actual situation. As an example, the allowable value of the deformation can be set to 0.02 mm.
[0075] In one achievable manner, such as Figure 2 As shown, after step S6, the method further includes steps S7-S9.
[0076] Step S7: Determine whether the obtained topological simulation result meets the preset processing requirements. If so, output the topological simulation result. Otherwise, add manufacturing constraints to the modifiable structure of the target part and return to step S6-2-2.
[0077] The preset processing requirements can be set according to the actual situation. For example, if in the obtained topology simulation result, it can be seen from the topology simulation diagram that there is no connecting medium between adjacent mounting holes, since the part is a whole and the mounting holes do not exist separately, it can be determined that the topology simulation result does not meet the preset processing requirements.
[0078] By adding manufacturing constraints, the direction in which material of the target part is removed can be restricted.
[0079] Step S8: based on the topology simulation result outputted in step S7, the original part design model of the target part is modified to obtain a new part design model.
[0080] Step S9: Perform dynamic simulation verification on the new part design model to determine whether the new part design model meets the preset usage requirements. If so, output the current new part design model.
[0081] Wherein, the preset usage requirements include preset processing requirements, preset weight requirements and / or preset requirements for interaction forces between parts.
[0082] When the new part design model is far from meeting the preset usage requirements, it is necessary to return to step S7 to modify the constraint conditions; if the new part design model almost meets the preset usage requirements, the current new part design model can be directly modified so that the dynamic simulation verification results of the new part design model meet the preset usage requirements.
[0083] In the embodiment of the present invention, the deformation amount of the part in the actual working process can be obtained, and a direct judgment can be made on whether the part design can meet the use requirements, thereby improving the feasibility of the actual processing process of the part structure after topology optimization.
[0084] The execution flow chart of step S9 is as follows: Figure 2 As shown, if the new part design model does not meet the preset use requirements, it is determined whether the difference between the dynamic simulation verification result and the preset use requirements is greater than the preset difference threshold. If so, the constraint conditions used in the topological simulation of the target part are modified and return to step S6-2-2. Otherwise, the current new part design model is directly modified so that the dynamic simulation verification result of the new part design model meets the preset use requirements. Among them, the structural features that do not meet the preset use requirements in the current new part design model are thickened and / or enlarged so that the dynamic simulation verification result of the new part design model meets the preset use requirements. The scale of each thickening or enlargement can be set according to actual conditions. As an implementation method, the scale of thickening or enlargement can be set to 2-5mm. As an example, when the current new part design model is directly modified, the structural features that do not meet the preset use requirements in the current new part design model are thickened by 2mm.
[0085] In one achievable manner, the constraint conditions used when performing topological simulation on the target part include deformation constraints, and modifying the constraint conditions used when performing topological simulation on the target part includes:
[0086] The deformation constraint value in the constraint condition used when performing topological simulation on the target part is reduced in proportion.
[0087] As an example, if the original deformation constraint value is 0.1mm, and the corresponding deformation value in the dynamic simulation verification result is 0.5mm, the deformation constraint value needs to be modified. If the qualified standard is 0.2mm, the ratio of 0.2 / 0.5 can be calculated based on the qualified standard and the corresponding deformation value in the dynamic simulation verification result, and the deformation constraint value is modified to 0.1×(0.2 / 0.5)=0.04mm.
[0088] In the above-mentioned embodiments of the present invention, the deformation amount of the parts in the actual working process can be obtained, so as to directly judge whether the part design can meet the use requirements, improve the feasibility of the actual processing process of the part structure after topology optimization, and effectively reduce the workload of the lightweight design of the parts.
[0089] The present invention also provides an embodiment of a component lightweight topology device, which can be used to execute the component lightweight topology method described in any of the above embodiments of the present invention.
[0090] See also Figure 3 , Figure 3 A structural connection block diagram of a parts lightweight topology device provided by an embodiment of the present invention is shown.
[0091] An embodiment of the present invention provides a lightweight topological device for parts, comprising:
[0092] The front module is used to determine the target parts and their associated parts to be topologically optimized;
[0093] A first simulation module, used for performing a first statics simulation on the target part and the associated parts to obtain a first statics simulation result;
[0094] A simulation parameter processing module, used to remove nonlinear parameters in original statics simulation parameters of the first statics simulation to obtain target statics simulation parameters;
[0095] A second simulation module, used for performing a second statics simulation on the target part and the associated parts based on the target statics simulation parameters to obtain a second statics simulation result;
[0096] a judgment module, used for judging whether the second statics simulation result and the first statics simulation result are within a preset error range, and if so, outputting the second statics simulation result as a target statics simulation result; otherwise, adjusting the target statics simulation parameters and returning to execute the second simulation module;
[0097] A topology simulation module is used to perform topology simulation on the target part based on the target statics simulation result.
[0098] The first simulation module is specifically used for:
[0099] Acquire actual data of the target part and the associated parts, wherein the actual data includes actual working condition data and actual contact condition data between parts;
[0100] A first statics simulation is performed on the target part and the associated part based on the actual data to obtain a first statics simulation result.
[0101] In the judgment module, the judging whether the second statics simulation result and the first statics simulation result are within a preset error range specifically includes:
[0102] Based on the first deformation cloud map in the second statics simulation result and the second deformation cloud map in the first statics simulation result, it is determined whether the similarity between the deformation directions of each location on the part of the first deformation cloud map and the second deformation cloud map is not less than a first similarity threshold, and whether the similarity between the color block shapes of each area on the part of the first deformation cloud map and the second deformation cloud map is not less than a second similarity threshold.
[0103] The topology simulation module includes:
[0104] A segmentation submodule, used for dividing the structure of the target part into an unmodifiable structure and a modifiable structure based on the target statics simulation result;
[0105] The topology submodule is used to define topology optimization objectives and constraints for the modifiable structure of the target part, and perform topology simulation based on the topology optimization objectives and constraints.
[0106] The topology submodules include:
[0107] A first topology submodule, for setting mass minimization as a topology optimization goal on the modifiable structure of the target part, and defining symmetry constraints and deformation constraints;
[0108] The second topology submodule is used to perform topology simulation based on the topology optimization goal, symmetry constraints and deformation constraints.
[0109] The topology simulation module also includes:
[0110] A judgment submodule, used to judge whether the obtained topology simulation result meets the preset processing requirements, and if so, output the topology simulation result; otherwise, add manufacturing constraints to the modifiable structure of the target part and return to execute the second topology submodule;
[0111] A model modification submodule, used to modify the original part design model of the target part based on the topological simulation result output by the judgment submodule to obtain a new part design model;
[0112] The output submodule is used to perform dynamic simulation verification on the new part design model to determine whether the new part design model meets the preset usage requirements. If so, output the current new part design model.
[0113] The output submodule is also used to:
[0114] If the new part design model does not meet the preset usage requirements, determine whether the difference between the dynamic simulation verification result and the preset usage requirements is greater than the preset difference threshold. If so, modify the constraint conditions used in the topological simulation of the target part and return to step S6-2-2. Otherwise, directly modify the current new part design model so that the dynamic simulation verification result of the new part design model meets the preset usage requirements.
[0115] Directly modify the current new part design model so that the dynamics simulation verification result of the new part design model meets the preset use requirements, including:
[0116] The structural features in the current new part design model that do not meet the preset use requirements are thickened and / or enlarged so that the dynamic simulation verification result of the new part design model meets the preset use requirements.
[0117] Modifying the constraints used when performing topological simulation on the target part includes:
[0118] The deformation constraint value in the constraint condition used when performing topological simulation on the target part is reduced in proportion.
[0119] The part lightweight topological device provided in the embodiment of the present invention is used to execute the part lightweight topological method provided in the present invention. Its principle and technical effects are the same as those of the part lightweight topological method provided in the present invention, and will not be repeated here.
[0120] Technical personnel in the relevant field can clearly understand that, for the convenience and conciseness of description, the specific working processes of the above-described devices, equipment and modules can refer to the corresponding processes in the aforementioned method embodiments, and the specific beneficial effects of the above-described devices, equipment and modules can refer to the corresponding beneficial effects in the aforementioned method embodiments, which will not be repeated here.
[0121] In the several embodiments provided in the present application, it should be understood that the disclosed devices, equipment and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.
[0122] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
[0123] In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of software functional modules.
[0124] If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.
[0125] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A method for lightweight topology of parts, characterized in that: include: S1: Determine the target part and its associated parts to be topologically optimized; S2: performing a first statics simulation on the target part and the associated parts to obtain a first statics simulation result; S3: removing nonlinear parameters from original statics simulation parameters of the first statics simulation to obtain target statics simulation parameters; S4: performing a second statics simulation on the target part and the associated parts based on the target statics simulation parameters to obtain a second statics simulation result; S5: determining whether the second statics simulation result and the first statics simulation result are within a preset error range; if so, outputting the second statics simulation result as a target statics simulation result; otherwise, adjusting the target statics simulation parameters and returning to step S4; S6: Performing topological simulation on the target part based on the target statics simulation result.
2. The method for lightweight parts topology according to claim 1, characterized in that: Step S2 specifically includes: Acquire actual data of the target part and the associated parts, wherein the actual data includes actual working condition data and actual contact condition data between parts; A first statics simulation is performed on the target part and the associated part based on the actual data to obtain a first statics simulation result.
3. The parts lightweight topology method according to claim 1, characterized in that: In step S5, judging whether the second statics simulation result and the first statics simulation result are within a preset error range specifically includes: Based on the first deformation cloud map in the second statics simulation result and the second deformation cloud map in the first statics simulation result, it is determined whether the similarity of the deformation direction at each location on the part of the first deformation cloud map and the second deformation cloud map is not less than a first similarity threshold, and whether the similarity of the color block shape of each area on the part of the first deformation cloud map and the second deformation cloud map is not less than a second similarity threshold.
4. The lightweight topology method for parts according to claim 1, characterized in that: Step S6 specifically includes: S6-1: dividing the structure of the target part into an unmodifiable structure and a modifiable structure based on the target statics simulation result; S6-2: defining topology optimization objectives and constraints for the modifiable structure of the target part, and performing topology simulation based on the topology optimization objectives and constraints.
5. The component lightweight topology method according to claim 4, characterized in that: The step S6-2 specifically includes: S6-2-1: Setting mass minimization as a topology optimization goal on the modifiable structure of the target part, and defining symmetry constraints and deformation constraints; S6-2-2: Perform topology simulation based on the topology optimization objectives, symmetry constraints and deformation constraints.
6. The component lightweight topology method according to claim 5, characterized in that: After step S6, the following steps are also included: S7: Determine whether the obtained topological simulation result meets the preset processing requirements. If so, output the topological simulation result. Otherwise, add manufacturing constraints to the modifiable structure of the target part and return to step S6-2-2. S8: modifying the original part design model of the target part based on the topology simulation result outputted in step S7 to obtain a new part design model; S9: Performing dynamic simulation verification on the new part design model to determine whether the new part design model meets the preset usage requirements. If so, outputting the current new part design model.
7. The component lightweight topology method according to claim 6, characterized in that: Step S9 also includes: If the new part design model does not meet the preset usage requirements, determine whether the difference between the dynamic simulation verification result and the preset usage requirements is greater than the preset difference threshold. If so, modify the constraint conditions used in the topological simulation of the target part and return to step S6-2-2. Otherwise, directly modify the current new part design model so that the dynamic simulation verification result of the new part design model meets the preset usage requirements.
8. The component lightweight topology method according to claim 7, characterized in that: Directly modify the current new part design model so that the dynamics simulation verification result of the new part design model meets the preset use requirements, including: The structural features in the current new part design model that do not meet the preset use requirements are thickened and / or enlarged so that the dynamic simulation verification result of the new part design model meets the preset use requirements.
9. The component lightweight topology method according to claim 7, characterized in that: Modifying the constraints used when performing topological simulation on the target part includes: The deformation constraint value in the constraint condition used when performing topological simulation on the target part is reduced in proportion.
10. A parts lightweight topological device, characterized in that: include: The front module is used to determine the target parts and their associated parts to be topologically optimized; A first simulation module, used for performing a first statics simulation on the target part and the associated parts to obtain a first statics simulation result; A simulation parameter processing module, used to remove nonlinear parameters in original statics simulation parameters of the first statics simulation to obtain target statics simulation parameters; A second simulation module, used for performing a second statics simulation on the target part and the associated parts based on the target statics simulation parameters to obtain a second statics simulation result; a judgment module, used for judging whether the second statics simulation result and the first statics simulation result are within a preset error range, and if so, outputting the second statics simulation result as a target statics simulation result; otherwise, adjusting the target statics simulation parameters and returning to execute the second simulation module; A topology simulation module is used to perform topology simulation on the target part based on the target statics simulation result.