中文摘要：

为保护运输货物完好，需控制车箱底板处的振动加速度小于一定值。采用多体系统动力学理论研究了某厢式货车双层隔振问题，提出了双层隔振系统中液压阻尼减振器弹簧刚度和阻尼的计算方法，运用ADAMS软件建立了整车系统虚拟样机模型，以车轮所在地基处的路面激励-功率谱密度函数为输入，以底板振动加速度为输出，结合实车参数进行平顺性仿真分析以评价厢式货车的双层隔振效果。结果表明：阻尼减振器在双层隔振系统中具有明显的隔振效果。

英文摘要：

To protect goods from damage, vibration acceleration of van bottom board should be controlled within a certain range. By applying the theory of multi-body system dynamics and virtual prototyping technique, the double-layer vibration isolation of van was studied. Adopting parameterized modeling technique in ADAMS software, a virtual prototype model fbr van was built and the calculation methods of hydraulic damper spring stiffness and damp were conducted. With the road excitation, i.e., power spectrum density function as input and vibration acceleration of van as output, tile effect of double-layer vibration isolation was evaluated. The results show that the isolation effect of damper is significant in the double-layer vibration isolation system.