Analysis and optimization of the TVD of a certain vehicle for solving abnormal noises in accelerating condition

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (6) : 86-91.

LI Ya’nan，HAO Zhiyong，ZHENG Xu，YANG Wenying

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Abstract

Aiming at reducing the abnormal noise of a certain vehicle, the excitation source was searched and determined by experiments. Besides, the mechanism of the noise caused by torsional vibration was analyzed. The influences of the rubber torsional stiffness and the MOI (moment of inertia) of the ring on the TVD (torsional vibration damper) modulation effect were studied respectively and their influential extents were compared. The conclusions are drawn that changing the MOI of the ring and torsional stiffness of the rubber can reduce the amplitudes of high harmonic components in the common speed region, however their influential extents are different. Based on the conclusions, the optimization to the original TVD was carried out. With the optimized TVD, the abnormal noise reduces greatly both in test and subjective assessment, and reaches the acceptable level.

Key words

abnormal noise / torsional vibration / TVD / torsional stiffness / moment of inertia

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LI Ya’nan，HAO Zhiyong，ZHENG Xu，YANG Wenying. Analysis and optimization of the TVD of a certain vehicle for solving abnormal noises in accelerating condition[J]. Journal of Vibration and Shock, 2018, 37(6): 86-91

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