非对称制动压力对汽车低频制动尖叫的影响

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (2) : 297-304.

论文

非对称制动压力对汽车低频制动尖叫的影响

吴奕东，陈晶艳，余家皓

作者信息 +

Influence of unsymmetrical brake pressure on the low frequency squeal of an automobile brake

WU Yidong, CHEN Jingyan, YU Jiahao

Author information +

文章历史 +

摘要

针对汽车制动尖叫问题，建立汽车制动器有限元模型并基于能量馈入法开展其非对称性和对称性制动压力下的复模态数值仿真。结果表明，耦合子系统的相对馈入能量能直接反映出各子部件的振型情况，当整体系统相对馈入能量的值接近0时，对应频率的复模态就无法被激发。对称性压力能够有效地降低活塞-卡钳的相对馈入能量，使得制动器的复模态振型以制动盘更高阶的面外振动为主，系统的复特征频率从3000Hz提高到5300Hz。

Abstract

Aiming at the problem of automobile brake squeal, the finite element model of automobile brake was established and the complex modal numerical simulation was carried out under asymmetrical and symmetrical brake pressure based on the energy feed-in method. The results show that the relative feed-in energy of the coupling subsystem can reflect the mode shape of the components. When the feed-in energy of the dual coupling subsystem is close to zero, the complex mode cannot be excited at the corresponding frequency. Symmetrical brake pressure can effectively reduce the relative feed-in energy of the piston caliper, and make the complex mode of the brake take the higher-order out-plane vibration of the brake disc as the main mode, so as to improve the complex characteristic frequency from 3000Hz to 5300Hz.

导出引用

吴奕东，陈晶艳，余家皓. 非对称制动压力对汽车低频制动尖叫的影响[J]. 振动与冲击, 2022, 41(2): 297-304

WU Yidong, CHEN Jingyan, YU Jiahao. Influence of unsymmetrical brake pressure on the low frequency squeal of an automobile brake[J]. Journal of Vibration and Shock, 2022, 41(2): 297-304

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