The Frictional Vibration Attenuation of Rubber Utilizing a Groove on the Body

Author:

Qu Junhao1,Wang Ruilin1,Ren Rui1,He Huabo1,Weng Shuang1,Huang Haibo12

Affiliation:

1. School of Mechanical Engineering and Mechanics, Ningbo University, No. 818, Fenghua Road, Ningbo 315211, China

2. Key Laboratory of Impact and Safety Engineering, Ministry of Education of China, Ningbo University, Ningbo 315211, China

Abstract

Frictionally induced vibrations in rubber are readily triggered due to their lower stiffness and higher elasticity. This study developed a numerical model to investigate the frictional vibration of a rubber block with a groove on its side surface against an aluminum disc. The results indicate that a backside groove (GB) on the block significantly enhances vibration attenuation, with a decay time 0.6 s faster than a non-grooved (NG) block, despite a potentially higher initial vibrational amplitude. In contrast, a frontside groove (GF) results in persistent frictional oscillations, with the steady-state time being similar for both GB and GF configurations. The underlying mechanism is attributed to the GB’s effectiveness in reducing the maximum energy imparted to the block initially, dissipating vibrational energy more swiftly, and distributing the contact stress more uniformly. The discrepancies in frictional forces between the conducted experiment and the simulation for the NG, GB and GF cases were 11.3%, 9.3% and 12.1%, respectively, quantitatively indicating the moderate precision of the results from the simulation. The insights gained from this study hold promise for enriching methods of mitigating vibrations arising from rubber friction.

Funder

Zhejiang Provincial Natural Science Foundation of China

Publisher

MDPI AG

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