本文从液压阻尼型橡胶隔振器的集总参数模型出发，推导并分析了其统一的复刚度线性模型。基于推导的线性模型，本文同时考虑了液压阻尼型橡胶隔振器惯性通道阻尼的非线性以及上液室刚度的非线性，建立一种新的非线性模型。该模型能反映液压阻尼型橡胶隔振器动态特性的幅值、频率相关性。最后，在简谐激励和随机激励下，利用本文建立的非线性模型分析液压阻尼式橡胶隔振器的动态响应，并和试验结果进行了对比分析。
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.
关键词
液压阻尼型橡胶隔振器 /
动态特性 /
频率相关性 /
幅值相关性
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Key words
Hydraulic damping rubber isolator /
dynamic characteristics /
Frequency dependence /
Amplitude dependence
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