Actual measurement and numerical analysis on the internal characteristics of different structures of hydraulically damped bushings under variable amplitude and frequency loads

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (2) : 166-174.

YANG Chaofeng1,2,ZHOU Yunjiao3,HUANG Xianglong2,LI Feng4,LI Youyi4,LIU Feifei1

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Abstract

Using experimental methods, the static and dynamic characteristics and internal characteristics of different structural hydraulic bushings under different amplitudes and different frequencies were tested. A unified multi-inertial tracks-multi-orifices hydraulic bushing lumped parameter model is derived, and the dynamic characteristics of the hydraulic bushing are described. A unified multi-inertial tracks-multi-orifices hydraulic bushing fluid flow response in the fluid channel and the response equation of pressure fluctuations in the fluid chamber are established. The calculation parameters of the physical model of the hydraulic bushing are obtained by the combination of direct fluid-solid coupling and fixed points. The calculation results are compared with the test to verify the correctness of the model. The calculation analyzes the internal characteristics of different structural hydraulic bushings under different amplitude and frequency excitation, and compares the theoretical derivation and experimental data to verify the correctness of the calculation and analysis results. The calculation method in the article can provide a direct reference for the initial selection, design and development of hydraulic bushings.

Key words

hydraulically damped bushings；lumped parameter model；internal characteristics / unified model；

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YANG Chaofeng1,2,ZHOU Yunjiao3,HUANG Xianglong2,LI Feng4,LI Youyi4,LIU Feifei1. Actual measurement and numerical analysis on the internal characteristics of different structures of hydraulically damped bushings under variable amplitude and frequency loads[J]. Journal of Vibration and Shock, 2023, 42(2): 166-174

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