摘 要：设计并制造了一种解耦膜刚度可调的半主动液阻型橡胶隔振器，对其静态、动态特性进行了实验测试。建立了半主动液阻悬置动特性计算分析的集总参数模型，利用该模型计算分析了一半主动液阻悬置在低频大振幅激励下的动刚度和滞后角，计算结果和实验值的对比结果证明了模型的正确性。给出了半主动液阻悬置在解决汽车在怠速、巡航与粗糙路面激励下的驾驶员座椅振动问题的应用实例。文中的分析方法和结论有助于被动式液阻悬置和半主动液阻悬置的设计与开发。

Abstract: A kind of semi-active engine mount (SEM) with switchable stiffness decoupler is designed and manufactured, and the dynamic characteristics are measured with MTS 831 servo-controlled hydraulic test rig. The linear Lumped Parameter (LP) model for SEM is proposed. The methods for the calculation of dynamic stiffness and loss angle with high amplitude in low frequency domain are presented using the linear LP model. The dynamic properties of SEM are estimated with LP model, and the predicted results have a good agreement with the experimental data, which validate the proposed LP model. Some applications of SEM for solving NVH (Noise, Vibration and Harshness) problems in powertrain mounting system are illustrated. The presented modeling method and conclusions are contributed to research and development of SEM and hydraulic engine mount (HEM).