悬架液压衬套的液固耦合建模及动态特性分析  

Fluid-Structure-Interaction Modeling and Dynamic Behavior Analysis for Hydrobushing of Suspension

作　　者：马天飞[1] 刘亚川[1] 乔雪冰[1] 王彦会[1,2] 

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022 [2]一汽集团汽车振动噪声与安全控制综合技术国家重点实验室,长春130011

出　　处：《中国机械工程》2013年第7期857-861,共5页China Mechanical Engineering

基　　金：吉林省科技支撑计划资助项目(20106003)

摘　　要：传统橡胶衬套由于自身属性的限制,不能同时降低低频抖动和隔离高频振动,而液压衬套可以较好地解决这个问题。结合某乘用车悬架系统采用的液压衬套,介绍液压衬套的结构和工作原理,阐述其动态特性参数动刚度和阻尼滞后角的物理意义。在AMESim软件中建立该液压衬套的模型并进行仿真计算,利用MATLAB软件处理仿真结果并进行分析。在MTS831试验台上完成了该液压衬套的动态特性试验,试验结果验证了所建模型的正确性。最后利用该模型研究了液压衬套相关模型参数对液压衬套动态特性的影响。Due to their own inherent physical limitations the conventional elastomeric bushings cannot simultaneously satisfy the conflicting requirements of low frequency shake control versus high frequency vibration isolation. But the hydrobushings can solve this problem well. The structure and the operational principles of a hydrobushing used by the suspension system in a passenger car were in- troduced. Meanwhile, dynamic stiffness and loss angle, two dynamic characteristic parameters were illustrated. A model of hydrobushing was built in simulation software AMESim. Based on the model, the simulation results can be gained. The mathematical software MATLAB was used to process the simulation results and make an analysis. The dynamic characteristic tests were performed with MTS831 servo--controlled hydraulic test rig. The test results prove that the model is correct and be- lievable. Finally, this model was used to research how the model parameters affect on the dynamic be- havior of hydrobushings.

关 键 词：液压衬套 AMESIM仿真 MATLAB动态特性 阻尼滞后角 

分 类 号：U463.33[机械工程—车辆工程]