计及运动副间隙的独立悬架汽车摆振动力学建模与分析  

Dynamics Modeling and Analysis on Shimmy in Independent Suspension Vehicle with Consideration of Clearances in Kinematic Pairs

作　　者：张磊[1] 卢剑伟[1] 姜俊昭[1] 燕培磊[1] 李磊[2] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009 [2]江淮汽车股份有限公司技术中心,合肥230601

出　　处：《汽车工程》2016年第12期1477-1482,共6页Automotive Engineering

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

摘　　要：以采用麦弗逊式独立悬架和齿轮齿条转向器的车辆为对象,计及转向系运动副间隙的影响,应用拉格朗日方程建立了8自由度车辆摆振系统动力学模型。接着基于非线性动力学分析方法,通过数值仿真,分析了车速、间隙和簧下质量对前轮摆振幅度的影响。结果表明,在某些特定车速范围,前轮会发生较为严重的自激摆振,与试验结果基本吻合,验证了模型的正确性。Taking a vehicle with Mc Pherson independent suspension and rack /pinion steering mechanism as objective,with consideration of the effects of clearances in the kinematic pairs of steering system,an eight DOF dynamics model for vehicle shimmy is established by applying Lagrange equation. Then based on nonlinear dynamics analysis,a numerical simulation is conducted on the model to analyze the effects of vehicle speed,clearances and unsprung mass on the shimmy amplitude of front wheels. The results show that rather serious self-excited shimmy may happen on front wheels at some specific speed ranges,which basically well agree with test results,verifying the correctness of the model built.

关 键 词：独立悬架汽车 前轮自激摆振 运动副间隙 动力学建模 

分 类 号：U463.33[机械工程—车辆工程]