非线性弹簧汽车悬架动态特性研究  

DYNAMIC CHARACTERISTICS OF VEHICLE SUSPENSION WITH NON-LINEAR SPRINGS

作　　者：赵和平[1] 黄宏成[1] 习纲[1] 张建武[1] 

机构地区：[1]上海交通大学机械工程学院汽车工程研究所,上海200030

出　　处：《机械强度》2001年第2期165-167,224,共4页Journal of Mechanical Strength

摘　　要：详细研究了非线性弹簧汽车悬架系统的动态特性。用变刚度弹簧代替定常刚度弹簧可明显改善车辆的乘坐舒适性 ,提高悬架系统的性能价格比。为反映实车工况 ,着重讨论了在随机路面激励下变刚度弹簧悬架簧载质量的动态响应特性。数值仿真研究结果表明 ,在悬架系统中选用合适的变刚度弹簧能有效改善乘坐舒适性。由于非线性弹簧悬架没有固有频率 ,因此避免了在外界激励下发生共振的危险。同时由于在较大变形下悬架“变硬” 。The dynamic performance of vehicle suspensions having a non-linear spring for the purpose of improving ride comfort and performance to price ratio of the passive suspensions with variable stiffness springs in stead of conventional ones is studied. The acceleration response of the sprung mass for the quarter cars model the suspension system under certain road uneven random excitations is discussed. Numerical simulations have demonstrated that in the vehicle suspension system by choosing appropriate variable stiffness springs, ride comfort can be improved efficiently. Because the suspension with non-linear springs has no eigenfrequency, it could avoid the resonance under certain road uneven random excitations. Meanwhile the handle stability could be improved because this type suspension becomes 'stiffer' under larger deformation.

关 键 词：非线性弹簧 悬架 乘坐舒适性 路面不平度 汽车 

分 类 号：U463.33[机械工程—车辆工程]