Experiment and modeling of the nonlinear dynamic characteristics of a hydraulic bushing used in a vehicle suspension#br#

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (3) : 79-86.

Yang Chao-Feng1 Yin Zhi-Hong1 Duan Xiao-Cheng2 Lu Zhao-Ping3 Shangguan Wen-Bin1,2

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Abstract

The dynamic characteristics of the hydraulic bushing, namely the dynamic stiffness and the loss angle, are crucial for the performance of the vehicle suspension. In the present work, the dynamic stiffness and the loss angle of a hydraulic bushing is tested and compared with the results predicted by a nonlinear lumped parameter model whose parameters are extracted by a parameter identification technique. Using the model, the effect of the main rubber and the inertia track on the dynamic stiffness and the loss angle is investigated. It is found the real part of the dynamic stiffness has a fix feature point while the magnitude of the dynamic stiffness tends to a certain constant value under the high frequency excitation. The good correlation suggests the validity of the model and the parameter identification implementation.

Key words

hydraulic bushings / dynamic performances / test analysis / nonlinear lumped parameter model / calculate analysis

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Yang Chao-Feng1 Yin Zhi-Hong1 Duan Xiao-Cheng2 Lu Zhao-Ping3 Shangguan Wen-Bin1,2. Experiment and modeling of the nonlinear dynamic characteristics of a hydraulic bushing used in a vehicle suspension#br#[J]. Journal of Vibration and Shock, 2016, 35(3): 79-86

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