CAE automatic modeling method and system for kinematic pair, terminal and storage medium

A modeling method and kinematic pair technology, applied in constraint-based CAD, geometric CAD, design optimization/simulation, etc., can solve problems such as poor consistency of simulation results, modeling errors, and inconsistent methods, so as to shorten the development cycle, Improve work efficiency and improve modeling efficiency

Pending Publication Date: 2022-04-19
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many types and quantities of vehicle kinematics, the manual modeling steps are cumbersome and the methods are not uniform; it takes a lot of time to model kinematics in the actual work process, and the cumbersome modeling steps are likely to lead to modeling errors. The modeling method is easy to cause the same vehicle model to produce greatly different simulation results
[0003] In the CAE analysis of vehicle collision, the accuracy of kinematic joint modeling seriously affects the vehicle kinematic form and finite element analysis results; however, there are many types and quantities of vehicle kinematic joints, the modeling cycle is long, and the modeling steps are cumbersome and error-prone. Inconsistent modeling methods and poor consistency of simulation results

Method used

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  • CAE automatic modeling method and system for kinematic pair, terminal and storage medium
  • CAE automatic modeling method and system for kinematic pair, terminal and storage medium
  • CAE automatic modeling method and system for kinematic pair, terminal and storage medium

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Experimental program
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Effect test

Embodiment 1

[0066] figure 1 It is a flow chart of a CAE automatic modeling method for a kinematic pair according to an exemplary embodiment, the method is used in a terminal, and the method includes the following steps:

[0067] Step 101. When a motion pair modeling request is received, obtain the motion pair modeling type and modeling nodes and two 3D finite element models to be assembled in the motion pair modeling request;

[0068] Step 102, determine the kinematic pair modeling feature points through the kinematic pair modeling type, modeling nodes and two 3D finite element models to be assembled;

[0069] Step 103 : Determine constraint conditions through the kinematic pair modeling feature points, and establish kinematic pair models of two 3D finite element models through the constraint conditions and the two 3D finite element models to be assembled.

[0070] Preferably, when the motion pair modeling request is received, the motion pair modeling type, modeling node and two 3D finit...

Embodiment 2

[0091] According to an exemplary embodiment, a CAE automatic modeling method of kinematic joints is shown. This method is used in a terminal. The method takes a rotating joint as an example, such as figure 2 As shown, the specific steps are as follows:

[0092] Step 201. When a motion pair modeling request is received, obtain the motion pair modeling type, modeling node and two 3D finite element models to be assembled in the motion pair modeling request, the specific contents include:

[0093] When a motion pair modeling request is received, start the motion pair modeling operation;

[0094] Obtain the kinematic joint modeling type corresponding to the kinematic joint modeling request as revolving joint and revolving joint modeling node;

[0095] Obtain two three-dimensional finite element models to be assembled as the first part P1 and the second part P2 respectively, and determine two material types and database types through the first part P1 and the second part P2 respec...

Embodiment 3

[0108] According to an exemplary embodiment, a CAE automatic modeling method of a motion pair is shown, the method is used in a terminal, and the method takes a motion pair as an example, such as Figure 4As shown, since the number of constraints introduced by each rotating joint and moving joint is the same in the planar low-joint mechanism, the modeling method of the moving joint is the same as the modeling method of the moving joint except the kinematic joint modeling in the above steps The steps of the external modeling method with different feature point positions are the same, so they will not be repeated here.

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Abstract

The invention discloses a CAE automatic modeling method and system for a kinematic pair, a terminal and a storage medium, and belongs to the field of finite element automatic modeling, and the method comprises the steps: obtaining a kinematic pair modeling type and modeling nodes in a kinematic pair modeling request and two to-be-assembled three-dimensional finite element models when the kinematic pair modeling request is received; kinematic pair modeling feature points are determined through the kinematic pair modeling type, the modeling nodes and the two to-be-assembled three-dimensional finite element models; and determining constraint conditions through the kinematic pair modeling feature points, and establishing kinematic pair models of the two three-dimensional finite element models through the constraint conditions and the two to-be-assembled three-dimensional finite element models. While the modeling precision is ensured, the working efficiency is greatly improved, and the product development period is shortened. Firstly, according to the technical scheme, the feature points of the kinematic pair can be accurately solved through an analytical equation, the constraint relation between the feature points and related parts is automatically established, and errors caused by manual operation can be avoided.

Description

technical field [0001] The invention discloses a CAE automatic modeling method, system, terminal and storage medium of a kinematic pair, and belongs to the field of finite element automatic modeling. Background technique [0002] In the simulation analysis of vehicle collision, in order to realize the relative transmission between components, it is necessary to model a large number of kinematic pairs, such as the universal joint of the steering system, the rotating pair between the door and the body, the moving pair of the transmission system, the suspension Spherical joints in the system, etc. Therefore, fast and accurate modeling of kinematic pairs is of great significance for vehicle collision analysis. However, there are many types and quantities of vehicle kinematics, the manual modeling steps are cumbersome and the methods are not uniform; it takes a lot of time to model kinematics in the actual work process, and the cumbersome modeling steps are easy to lead to model...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F30/15G06F111/04
CPCG06F30/23G06F30/15G06F2111/04
Inventor 黄泽辉逯小雨朱学武王士彬
Owner CHINA FIRST AUTOMOBILE
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