Modeling method for dynamic characteristics of hydraulic damping rubber isolator
LIU Xuelai1,2, HAN Yuqi2, JIANG Jian1, ZHENG Yawei1, YIN Zhihong1, SHANGGUAN Wenbin1
1.School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China;
2.Technical Center, Shanghai Automotive Group Co., Ltd., Shanghai 201800, China
Abstract：Based on the lumped parameter model of hydraulic damping rubber isolator, a unified linear model of complex stiffness is deduced and analyzed. Based on the derived linear model, a new nonlinear model is established by considering both the nonlinear damping of inertia channel and the nonlinear stiffness of upper chamber of hydraulic damping rubber isolator. The model can reflect the amplitude and frequency dependence of dynamic characteristics of hydraulic damping rubber isolator. Finally, the nonlinear model is used to analyze the dynamic response of hydraulic damping rubber isolator under harmonic excitation and random excitation, and the experimental results are compared and analyzed.
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