Accurate modeling method for vehicle flexible connection

Abstract

The invention relates to an accurate modeling method for vehicle flexible connection which comprises two parts: 1, a part-level test: obtaining mechanical properties and failure parameters of flexible connection by a test; 2, carrying out building and test calibration of a simulation model to ensure consistency of a simulation result and a test result. According to the accurate modeling method for the vehicle flexible connection, component-level test method is simple and reliable, the universality is high, the engineering realizability is high, and the analogue simulation method is high in precision; Parameters used in the method are all obtained from a component level test, a whole vehicle level test and analogue simulation, data sources are accurate, the calibration method is high in feasibility, simulation of flexible connection of different vehicles can be achieved, mechanical properties and failure characteristics of the vehicles can be accurately simulated, an accurate deformation mode of the component in whole vehicle collision is obtained. Therefore, the collision resistance simulation precision of the whole vehicle structure, especially the simulation precision of medium and low speed collision, can be improved.

Description

technical field [0001] The invention belongs to the technical field of automobile safety, and in particular relates to an accurate simulation modeling method for flexible connections of vehicles. Background technique [0002] In vehicle development, flexible connection is a commonly used connection method for some key components. The accuracy of flexible connection modeling directly affects the development and analysis of the crashworthiness of the vehicle structure, especially the accuracy of the simulation analysis results of medium and low speed crashes. [0003] The prior art discloses a CAE simulation method for laser welding of auto parts, which includes the following steps: Step 1, test the mechanical properties of the joint at the sample level, and obtain laser welding through the sample test of lap joint and fillet joint. The mechanical characteristic parameters of the laser welding head; Step 2, the establishment and calibration of the detailed model of the laser ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a flexible connection collision simulation method of automobile parts which is simple and convenient, has high engineering application precision and strong universality, so as to solve the problem of accurate Problems reflecting the failure and mechanical properties of flexible connections

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