Automobile transverse stabilizer bar assembly design system based on finite element analysis

Abstract

The invention discloses an automobile transverse stabilizer bar assembly design system based on finite element analysis, and relates to the technical field of automobile stabilizer bar production, and the system comprises a demand obtaining module which is used for obtaining target products and requirements of a specified unit or personnel, and generating demand data; the integrated development platform is established based on a preselected three-dimensional modeling module and a finite element analysis module, calls and loads the finite element analysis module through the three-dimensional modeling module, carries out digital-analog import and parameterized design input, reads or writes model and material information through the finite element analysis module, carries out pretreatment and simulation analysis, and outputs an analysis report; the method comprises the steps of grid division, Part information integration, contact modeling, load constraint, Step integrated management, optimization and result post-processing. The method has the effect of helping automobile accessory suppliers to better carry out high-quality production and processing.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile stabilizer production, in particular to an automobile transverse stabilizer assembly design system based on finite element analysis. BACKGROUND

[0002] The automobile stabilizer assembly (including an inner wall, a section, a clamp and a bushing) is a vehicle accessory component for connecting a stabilizer and a steering column and is located between the stabilizer and a suspension arm to improve the stability of the stabilizer.

[0003] At present, with the increase in automobile sales, the main machine factory has gradually improved the quality requirements for the suppliers (stabilizer assembly) in addition to the increasing demand year by year.

[0004] Parameterized design plays an important role in the optimization design of assembly products. At present, Abaqus or Ansys standard software analysis can only meet the basic simple stabilizer outer wall stress analysis. If the product is slightly complex or needs more accurate analysis results, professional analysts need to preprocess the product. For example, designers need to meet the skills of CAE professional analysis and stabilizer design at the same time, which is extremely high, and the high-quality production and processing of suppliers are limited, so a new technical solution is provided. SUMMARY

[0005] In order to reduce the limitation of professional technical personnel for vehicle accessory component suppliers and better perform high-quality production and processing, the application provides an automobile transverse stabilizer assembly design system based on finite element analysis.

[0006] The application provides an automobile transverse stabilizer assembly design system based on finite element analysis, which adopts the following technical solution: An automobile transverse stabilizer assembly design system based on finite element analysis comprises: A demand acquisition module is used to acquire target products and requirements of a specified unit or personnel and generate demand data; An integrated development platform is established based on a preselected three-dimensional modeling module and a finite element analysis module, and the finite element analysis module is called and loaded through the three-dimensional modeling module, model import and parameterized design input are performed, the finite element analysis module reads or writes model and material information, pre-processing and simulation analysis are performed, and an analysis report is outputted; The integrated development platform reads or writes model and material information through the finite element analysis module, performs pre-processing and simulation analysis, and outputs an analysis report, which comprises meshing, Part information integration, contact modeling, constraint load, Step integration management, optimization and result post-processing.

[0007] Optionally, the integrated development platform performs meshing, which includes: dividing the target product into multiple parts; assigning a meshing scheme to each part and establishing an independent module; after meshing each part, modeling and renaming the parts and components are performed.

[0008] Optionally, the integrated development platform performs Part information integration, which includes: establishing an information integration and display interface for the parts; wherein the display items include name, renaming, attributes, and material; automatically associating the target parts according to the information filled in the interface for defining modeling.

[0009] Optionally, the integrated development platform performs contact modeling, which includes: defining multiple contact types; wherein the contact types include at least bonding, general contact, and interference contact; determining two parts that exist in contact, the corresponding contact type, and establishing a contact pair, and establishing contact attributes according to the contact type.

[0010] Optionally, the integrated development platform performs a contact modeling module, which further includes: defining an interface for inputting contact modeling parameters, and the interface is in list form; batch processing contact modeling according to the information filled in the input interface.

[0011] Optionally, the integrated development platform performs a constraint load module, which includes selecting a constraint position according to user instructions, and performing constraint load modeling according to the input constraint information and load information.

[0012] Optionally, the integrated development platform performs Step integration management, which includes: establishing a time step management interface, integrating associated modeling information in an interface, and contacting the modeling steps; assigning information modification permissions to the integrated information interface, which includes: contact type selection, start switch setting; contact type selection, start switch setting; load modeling information modification, start development setting.

[0013] Optionally, the integrated development platform performs optimization and result post-processing, which includes: defining optimization variables, which include at least the diameter of the stabilizer rod, the outer contour size of the bushing, the bushing material, and the bushing interference amount; defining an optimization variable parameterization input interface to perform model reconstruction; defining a one-key submission permission for multiple optimization data of the model, and performing queuing analysis and processing after submission.

[0014] In summary, the present application includes the following beneficial technical effects: the system can help the staff to automatically analyze the patent design of the stabilizer bar assembly, reduce the professional ability requirement of the staff, thereby reducing the limitation of professional and technical personnel for auto parts component suppliers, and better performing high-quality production and processing. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a development process schematic diagram of the present application; Figure 2 is a grid division example schematic diagram of the present application; Figure 3 is a schematic diagram of the clamp grid division example of the present application; Figure 4 is a Part information management interface schematic diagram of the present application; Figure 5 is a contact modeling example schematic diagram of the present application; Figure 6 is a constraint load example schematic diagram of the present application; Figure 7 is a time step management interface schematic diagram of the present application; Figure 8 is an optimization variable parameterization input interface schematic diagram of the present application. DETAILED DESCRIPTION

[0016] The following will be described in conjunction with the accompanying Figures 1-8 The present application will be further described in detail.

[0017] The embodiment of the present application discloses a vehicle transverse stabilizer bar assembly design system based on finite element analysis.

[0018] Referring to Figure 1 , the vehicle transverse stabilizer bar assembly design system based on finite element analysis comprises a demand acquisition module and an integrated development platform, wherein the demand acquisition module is used to acquire the target product and requirements of the designated unit or personnel, and generate demand data; Example: Establish an online and offline multi-party communication record mechanism, and require the user to initiate the demand, and record, track and upload the communication record by the relevant personnel, and the tracking items include: 1) supplier operation content and results based on the demand; 2) meeting record.

[0019] Referring to Figure 1 , regarding the integrated development platform, the workflow at least includes: grid division-material attribute definition-contact modeling-constraint load setting-model checking-analysis calculation-post processing (such as fatigue analysis, stabilizer bar optimization); the platform has: Based on the pre-selected three-dimensional modeling module (such as Catia design software) and finite element analysis module (Abaqus analysis software) is established, and the finite element analysis module is called and loaded through the three-dimensional modeling module; the two modules share the background data file, such as the stable rod system data file, csv, model information file; the Catia design software calls and loads the Abaqus analysis software through the simulation analysis interface.

[0020] The platform supports digital model import and parameterized design input because of the above settings, reads or writes model and material information with the finite element analysis module, performs pre-processing and simulation analysis, and outputs analysis report.

[0021] In the embodiment, the above platform: 1), the material database of each component is embedded (assembled), which can be called as needed during analysis, and new materials can be established in the material database by inputting the constitutive parameters of the materials; 2), the load condition input mode is set to automatically identify the fixed and loaded positions according to the defined clamp and end, or the user can input the positions.

[0022] The report generated by the above analysis is as follows: The Abaqus analysis software uses Python script to extract stress result cloud map, basic durability cloud map and stiffness result from odb result file. After extracting the results, the COM interface is used to interact with Powerpoint to automatically generate analysis report of the extracted results and cloud map.

[0023] The above integrated development platform reads or writes model and material information with the finite element analysis module, performs pre-processing and simulation analysis, and outputs analysis report, which includes meshing, part information integration module, contact modeling, constraint load, step integration management, optimization and result post-processing.

[0024] According to the above content, the system can help the staff to automatically design and analyze the stable rod assembly, reduce the professional ability requirement of the staff, thereby reducing the limitation of professional and technical personnel for the automobile parts component supplier, and better performing high-quality production and processing.

[0025] In an embodiment of the present application, referring to Figure 2 and Figure 3 Meshing, which includes: Divide the target product into multiple components; for example: rod body, end, etc. Assign a meshing scheme (standard) to each component and establish an independent module; After meshing each component, model and rename the parts and components.

[0026] Regarding meshing, refer to Figure 3 To give a specific process example with the clamp, the bottom plate.

[0027] Refer to Figure 4 In an embodiment of the present application, the Part information integration module includes: Establish the information integration and display interface of the parts; wherein the display items include name, rename, attribute and material; According to the information filled in the interface, automatically associate the target parts for defining modeling.

[0028] Refer to Figure 5 In an embodiment of the present application, the contact modeling includes: Define multiple contact types; wherein the contact types include at least adhesive contact, general contact, interference contact; According to the user instruction, determine the two parts with contact and the corresponding contact type, and establish the contact pair, and establish the contact attribute according to the contact type.

[0029] Regarding the example of contact modeling, refer to Figure 5 as shown.

[0030] Further, in order to facilitate the staff to carry out contact modeling, the above-mentioned contact modeling further includes: Define the interface for inputting contact modeling parameters, and the interface is in the form of list; According to the input information of the input interface, batch contact is carried out; for example: batch processing of the same kind, to improve the processing efficiency.

[0031] Refer to Figure 6 In an embodiment of the present application, the constraint load module includes: selecting the constraint position according to the user instruction, and performing constraint load modeling according to the input constraint information and load information.

[0032] Regarding the example of constraint load, refer to Figure 6 as shown; it can be understood that the embodiment preferably establishes a one-key automatic selection function, and the range of one-key automatic selection includes: automatically selecting the hole and the node on the plane.

[0033] Refer to Figure 7 In an embodiment of the present application, the Step integration management includes: Establish a time step management interface, integrate the associated modeling information in an interface, and contact the modeling steps; Assign information modification authority to the interface of integrated information, and include: contact type selection, start switch setting; contact type selection, start switch setting; load modeling information modification, start development setting.

[0034] Example: In step 1, the contact type, constraint freedom information, load size, etc. can be modified, and in step-1, the contact, constraint, load, etc. are closed.

[0035] Referring to Figure 8 In an embodiment of the present application, the optimization and post-processing module comprises: The variables to be optimized are defined, and at least include the diameter of the stabilizer bar, the outer profile size of the bushing, the bushing material, and the bushing interference amount; The optimization variable parameterization input interface is defined, and the model is reconstructed; The one-key submission permission of multiple optimization data of the model is defined, and after submission, the queuing analysis and processing are performed.

[0036] According to the above settings, the system can be established, and through relevant verification, the system improves the analysis efficiency of the stabilizer bar assembly analysis. The single product single simulation analysis time is reduced from 8h to 1h, and the analysis report preparation time is reduced from 4h to 0.5h; The functions of stabilizer bar assembly parameterization import, hollow rod inner and outer wall, transverse axial cross-section stress analysis, and accessory deformation stress analysis are realized, which greatly improves the design capability of the stabilizer bar; In major host manufacturers, the customer satisfaction in the stabilizer bar project design is significantly improved, and the invisible economic benefits are realized.

[0037] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A finite element analysis based design method for a vehicle anti-roll bar assembly, characterized by, It comprises: a demand acquisition module for acquiring target products and requirements of specified units or personnel, and generating demand data; an integrated development platform based on pre-selected three-dimensional modeling module and finite element analysis module, and calling and loading finite element analysis module through three-dimensional modeling module, importing digital model and parameterized design input, reading or writing model and material information through finite element analysis module, pre-processing and simulation analysis, and outputting analysis report; wherein the integrated development platform reads or writes model and material information through finite element analysis module, pre-processes and simulates analysis, and outputs analysis report, which comprises: meshing, Part information integration, contact modeling, constraint load, Step integration management, optimization and result post-processing.

2. The finite element analysis based design method of an automobile anti-roll bar assembly as claimed in claim 1, wherein: The integrated development platform performs meshing, which comprises: dividing the target product into multiple parts; assigning a meshing scheme to each part and establishing an independent module; after meshing each part, modeling and renaming the parts and parts.

3. The finite element analysis based design method for automobile anti-roll bar assembly of claim 1, wherein: The integrated development platform performs Part information integration, which comprises: establishing information integration and display interface of parts; wherein the display items include name, renaming, attribute and material; automatically associating target parts according to the information filled in the interface for defining modeling.

4. The finite element analysis based design method for automobile anti-roll bar assembly of claim 1, wherein: The integrated development platform performs contact modeling, which comprises: defining multiple contact types; wherein the contact types at least include bonding, general contact and interference contact; determining two parts with contact and corresponding contact type, and establishing contact pair, and establishing contact attribute according to contact type.

5. The finite element analysis based design method of an automobile anti-roll bar assembly as claimed in claim 4 wherein: The integrated development platform performs contact modeling module, which further comprises: defining the interface for inputting contact modeling parameters, and the interface is in list form; batch processing contact modeling according to the information filled in the input interface.

6. The finite element analysis based design method for automobile anti-roll bar assembly of claim 1, wherein: The integrated development platform performs constraint load module, which comprises: selecting constraint position according to user instruction, and modeling constraint load according to input constraint information and load information.

7. The finite element analysis based design method for automobile anti-roll bar assembly of claim 1, wherein: The integrated development platform performs Step integration management, which comprises: establishing time step management interface, integrating associated modeling information in an interface, and contacting modeling step; assigning information modification authority to the interface of integrated information, and comprising: contact type selection, start switch setting; contact type selection, start switch setting; load modeling information modification, start development setting.

8. The finite element analysis based design method for automobile anti-roll bar assembly of claim 1, wherein: The integrated development platform performs optimization and result post-processing, which comprises: defining optimization variables, and at least including stable rod diameter, bushing outer contour size, bushing material and bushing interference amount; defining optimization variable parameterization input interface to perform model reconstruction; defining one-key submission authority of multiple optimization data of the model, and performing queuing analysis processing after submission.

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