CAE-based simulation test method for crashworthiness of whole front structure of new energy automobile

Abstract

The invention relates to a CAE-based simulation test method for crashworthiness of whole front structure of new energy vehicle. The method comprises the steps of constructing a virtual new energy vehicle whole vehicle, a virtual rigid ground and a virtual rigid wall body; simulating the whole process that the whole virtual new energy vehicle runs along the virtual rigid ground at a preset vehiclespeed and impacts the virtual rigid wall body; detecting and extracting in real time and judging whether the acceleration parameter of the whole virtual new energy vehicle, the deformation quantity ofthe virtual non-rigid body part and the invasion quantity of the battery pack of the whole virtual new energy vehicle meet preset conditions or not in the process from the whole virtual new energy vehicle and the virtual rigid wall body to the beginning of collision to the end of collision; and if yes, storing the whole virtual new energy vehicle for designing the whole vehicle. According to themethod, through CAE simulation, a large amount of manpower and material resources do not need to be consumed, the danger in the actual test is avoided, and the cost of the vehicle front structure collision test is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle performance detection, in particular to a CAE-based simulation test method for the crashworthiness of the frontal structure of a new energy vehicle. Background technique [0002] In the initial stage of automotive passive safety, the commonly used research methods are mainly test methods. The commonly used safety tests for automotive passive safety include: car crash simulation test, real car crash test and bench impact test. The real vehicle crash test is the most reliable method to comprehensively evaluate the passive safety of vehicles because it is closest to the accident situation. However, the passive safety test, especially the whole vehicle test, is a destructive test. The test cost is expensive and the test cycle is long. Due to the influence of some random factors in the test, the test results are often not stable enough and the repeatability is poor. [0003] Especially for new energy ...

AI Technical Summary

Problems solved by technology

However, the passive safety test, especially the vehicle test, is a destructive test. The test cost is expensive and the test period is long. Due to the influence of some random factors in the test, the test results are often not stable enough and the repeatability is poor.

[0003] Especially for new energy vehicles, after a collision, if the protection is not in place, the power battery pack and high-voltage circuit will be impacted or damaged, and problems su

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