计入运动副间隙的汽车制动摆振动态响应分析  

Dynamic Response of Shimmy Systems under Braking Conditions with Consideration of Clearances in Joints

作　　者：姜俊昭[1] 卢剑伟[1] 李金辉[1] 杨士钦 

机构地区：[1]合肥工业大学汽车与交通工程学院,合肥230009 [2]江淮汽车股份有限公司乘用车技术中心,合肥230601

出　　处：《中国机械工程》2017年第14期1658-1663,共6页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50975071);教育部新世纪优秀人才支持计划资助项目(NCET-10-0358);安徽省高校省级自然科学研究重大项目(KJ2014ZD06)

摘　　要：建立了考虑制动过程中参数时变特性,并计入转向系运动副间隙耦合作用的七自由度非自治摆振系统的动力学模型。通过MATLAB数值算例,对制动过程中转向轮摆振的动态响应进行了分析。考察了轴荷转移、车速、间隙、轴距等因素对系统瞬态响应的影响。研究结果表明:制动过程中,轴荷转移等时变特性及运动副间隙的耦合作用对摆振系统动力学行为有重要影响,在建模时应予以考虑。相关规律与试验结果基本吻合,验证了模型的准确性。A 7-DOF dynamic model under braking conditions was established,where time-varying characteristics of parameters and dynamic coupling among movement pairs with clearances were taken into account.Dynamic response analysis of shimmy system under braking conditions was carried out through numerical examples with MATLAB.Moreover,influences of load transfers,vehicle speeds,clearances and wheelbases on transient response of shimmy system were discussed.It is concluded that the time-varying characteristics of parameters under braking conditions and dynamic coupling in joints with clearances may have great influences on dynamic behaviors of shimmy,which should be taken into account in system modeling.The conclusions agree with the experimental results in general,which may verify the accuracy of the dynamic model.

关 键 词：摆振 制动 间隙 轴荷转移 瞬态响应 

分 类 号：U461.61[机械工程—车辆工程] TH132[交通运输工程—载运工具运用工程]