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Finished vehicle abnormal sound simulation analysis method and system and computer readable storage medium

A technology of simulation analysis and abnormal noise, which is applied in the field of simulation analysis of automobile abnormal noise, can solve problems that cannot be considered, and achieve the effect of improving efficiency

Pending Publication Date: 2022-04-15
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme does not use road spectrum excitation; in addition, in terms of the risk evaluation index of abnormal friction noise, a single maximum amplitude is directly extracted from the relative displacement in the time domain as an evaluation index, which cannot consider the randomness of the relative displacement of the two components during the actual road driving process

Method used

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  • Finished vehicle abnormal sound simulation analysis method and system and computer readable storage medium
  • Finished vehicle abnormal sound simulation analysis method and system and computer readable storage medium
  • Finished vehicle abnormal sound simulation analysis method and system and computer readable storage medium

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Experimental program
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Embodiment Construction

[0045] The following is further described in detail through specific implementation methods:

[0046] Such as figure 1 As shown, a method for simulating abnormal noise of a whole vehicle is oriented to real road conditions and is suitable for predicting the risk position of vehicle collision and abnormal friction noise. In this embodiment, the method is described by taking the instrument panel as an example. Including the following steps:

[0047] S1: Obtain the road spectrum of abnormal noise on the vehicle body side

[0048] The road spectrum of abnormal noise on the vehicle body side can be obtained through real vehicle testing. Let the car drive at a specified speed on the vehicle abnormal noise road, and use a three-way acceleration sensor to test the acceleration. The corresponding test positions on the vehicle body side are: chassis suspension spring installation area, shock absorber installation area, rear suspension control arm installation area, front and rear sub-...

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Abstract

The invention provides a whole vehicle abnormal sound simulation analysis method and system and a computer readable storage medium, and the method faces real road working conditions, and comprises the steps: S1, obtaining a whole vehicle body side abnormal sound road spectrum; s2, building an abnormal sound simulation model; s3, creating a node pairing unit group; s4, loading an abnormal sound road spectrum; s5, operating modal transient response analysis; s6, extracting relative displacement; s7, generating impact and friction abnormal sound evaluation indexes; and S8, carrying out impact and friction abnormal sound risk evaluation. The method can be used for in-vehicle impact and friction abnormal sound risk prediction in the whole vehicle design stage, and problem rectification in the real vehicle stage is reduced, so that the whole vehicle abnormal sound performance development process is accelerated, after-sales TGW abnormal sound complaints are reduced, and the user experience feeling is improved.

Description

technical field [0001] The invention relates to the technical field of automobile abnormal sound simulation analysis, in particular to a vehicle abnormal sound simulation method for road working conditions. Background technique [0002] Abnormal noise is a performance index that is easily perceived by car users, and it is one of the concerns of major vehicle manufacturers and parts companies. When the car is running on the road, the vehicle component system (such as the instrument panel, door trim, etc.) generates relative motion due to the excitation of the road surface, and there will be collisions between adjacent interior parts and interior parts, and between interior parts and metal parts. Friction, the squeaking sound caused by friction can be called friction noise, and the clicking sound caused by impact can be called impact noise. With the transformation and upgrading of consumption, the pace of product development of car companies has also accelerated. Developing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/23
Inventor 舒玉光王卓刘德峰徐朋吴军强刘雪琴
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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