基于虚拟样机模型的液压ISD悬架动态性能分析  

Dynamic Performance Analysis of Hydraulic ISD Suspension Based on Virtual Prototype Model

作　　者：汪若尘[1] 黄欢[1] 孟祥鹏[1] 吴涛[1] 陈龙[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013

出　　处：《机械工程学报》2015年第10期137-142,共6页Journal of Mechanical Engineering

基　　金：国家自然科学基金(50905078);江苏省自然科学基金(BK2012714);江苏省333工程;江苏省六大人才高峰;江苏省青蓝工程;江苏大学拔尖人才工程资助项目

摘　　要：悬架是汽车的重要总成,惯容器的出现为汽车悬架技术的发展开辟了一个新的方向和领域。为了研究液压'惯容器-弹簧-阻尼器'(Inerter-spring-damper,ISD)悬架性能,以试验样车为基础,分别建立整车ISD悬架虚拟样机模型和液压惯容器模型,进行系统的联合仿真,分析随机路面谱输入和脉冲路面谱输入作用下液压ISD悬架的动态特性,研制液压惯容器和ISD悬架原理样机,并进行四通道轮胎耦合道路模拟台架试验。结果表明,与传统被动悬架相比,液压ISD悬架具有更好的整车动态性能,车身的质心垂直加速度、俯仰角加速度、侧倾角加速度、左前悬架动行程和左前轮胎动载荷方均根值下降明显,有效地抑制了车身振动,控制了车身姿态,协调了整车乘坐舒适性和行驶安全性之间的矛盾。Suspension is an important assembly of vehicle. The emergence of inerter opens up a new direction and field for the development of automotive suspension technology. To study the performance of hydraulic ＂inerter-spring-damper（ISD）＂ suspension, on the basis of test prototype, a virtual prototype model of vehicle ISD suspension and hydraulic inerter model are established respectively. Co-simulation is carried out to analyze the dynamic performance of hydraulic ISD suspension with stochastic road spectrum input and pulse road spectrum input. The principle prototypes of hydraulic inerter and ISD suspension are designed and its four-channel tyre coupling road simulation bench test is performed. The results show that the hydraulic ISD suspension has better vehicle dynamic performance in contrast to the traditional passive suspension, and root mean square values of vertical acceleration of the centre of body mass, pitching angle acceleration, roll angle acceleration, dynamic schedule of the left front suspension and dynamic load of the left front tire decline obviously. The hydraulic ISD suspension can inhibit body＇s vibration, control the posture of body effectively and coordinate the contradiction between vehicle＇s ride comfort and driving safety.

关 键 词：汽车悬架 液压惯容器 联合仿真 台架试验 乘坐舒适性 行驶安全性 

分 类 号：U463[机械工程—车辆工程]