随机装配侧隙对齿轮系统动力学特性-农业工程学报.doc

温度效应对考虑转向传动机构间隙的车辆摆振影响分析 卢剑伟11，王锡锌1，Stephanos Theodossiades2 （1. 合肥工业大学机械与汽车工程学院，合肥 230009 中国； 2. 拉夫堡大学Wolfson机械与制造工程学院，拉夫堡 LE113TU 英国） 摘要：为了改善车辆在不同作业环境下的操控性能，防止由于地域及季节气温差异导致转向系动态响应偏离其设计初衷，以非独立悬架车辆为例，对考虑温度效应的转向传动机构含间隙车辆摆振系统动力学行为进行了分析。基于热弹性力学考察了温度效应对转动副间隙的影响，建立了计入温度效应的转向传动机构含间隙车辆摆振系统动力学模型。通过数值算例分析了系统的分岔特性和初值特性，讨论了车速、温度等参数对摆振系统全局动力学行为的影响，发现温度的改变在某些车速下会导致转向系动力学行为明显改变，且这种影响在高车速区段下比中低车速区段更为明显，相关分析方法和结论为全天候车辆防摆振设计提供依据。 关键词：温度效应；车辆；间隙；摆振；动力学 中图分类号：TH132 Influence of Temperature Effect on Vehicle Shimmy with Clearance in Steering Linkage Mechanism Lu Jianwei1, Xu Yi1, Wang Xixin1, Stephanos Theodossiades2 (1. School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China; 2. Wolfson School of Mechanical and?Manufacturing Engineering, Loughborough University, Loughborough, LE113TU, UK) Abstract: Vehicle works in outdoor environment to deliver goods or people, while the ambient temperature varies in different season or different region. Since the process parameters of the kinetic pair in vehicle steering mechanism are usually designed based on the domestic temperature 20oC, the temperature variation usually leads to mechanical deformation of components of kinetic pair in vehicle steering mechanism, and as a result, the deformation of the components may change the kinetic and dynamic characters of the kinetic pair. Consequently, the dynamic response of the steering system may vary if the vehicle is exposed to different temperature working conditions. And as a result, the dynamic behavior of vehicle shimmy system may be influenced by the temperature effect. Actually, some cases have been reported that the dynamic response of steering system of some certain vehicles varied in different season or in different region. To evaluate the influence of temperature effect on dynamic response of vehicle shimmy system with clearance in steering mechanism, and prevent the potential deviation of the dynamic response of the steering system from its origin