An experimental and numerical study on the effect of surface texturing on squeal noise of brake disc materials

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (24) : 182-187.

WANG Xiaocui, MO Jiliang, YANG Jiangzhou, HU Lihong, CHEN Guangxiong, ZHU Minhao

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Abstract

Groove-textured surfaces with different dimensions and regular angle intervals are manufactured on train brake disc materials by electromachining. Experimental study is conducted to investigate the influence of groove-textured surfaces on friction-induced noise in a flat-on-flat configuration, by using train brake pad as counterface. Moreover, numerical study is performed to simulate the experimental process by using methods of complex eigenvalue analysis and dynamic transient analysis. Both the experimental and numerical results show that the existence of groove-textured surfaces on brake disc materials can reduce the squeal generation, compared to the case of untreated smooth surface. The interface friction force fluctuates when the brake pad specimen slides across the groove-textured surface, and the collision between the edges of groove and pad specimen will interrupt the continuous contact of the friction surfaces and disturb the continuous self-excited of the friction system. No continuous high frequency components of friction force and vibration acceleration are formed and consequently the squeal noise is significantly reduced.

Key words

Friction squeal noise / Finite element / Surface texturing / Numerical simulation

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WANG Xiaocui, MO Jiliang, YANG Jiangzhou, HU Lihong, CHEN Guangxiong, ZHU Minhao. An experimental and numerical study on the effect of surface texturing on squeal noise of brake disc materials[J]. Journal of Vibration and Shock, 2015, 34(24): 182-187

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