摘要
阻尼匹配是制约车辆悬架系统减振器设计的关键问题.以某轻型卡车为研究对象,利用MATLAB软件建立了悬架阻尼优化设计的半车模型.采用车体垂向加速度、俯仰角加速度和车轮动载均方根值作为评价指标,利用线性加权和法建立了悬架阻尼优化设计的目标函数.在随机路面激励下,对悬架系统阻尼进行了优化匹配和分析,并通过实车实验验证了优化效果.研究结果表明,悬架阻尼的匹配优化可有效提高车辆的行驶平顺性,从而为车辆悬架的动态设计提供有益参考.
Damping matching is a key issue in the design of shock absorber for a vehicle suspension system.For light trucks,a half vehicle model for the optimal design of suspension damping is established in MATLAB.Using the root mean square value of the vertical and pitching accelerations of the vehicle body and the tire dynamic load as the evaluation index,the objective function of the damping ratio optimization design is established through the linearity-weighted-sum method.Under the stochastic road roughness excitation,the suspension damping ratio is optimized and analyzed,and the result is verified by the real car experiment.It is shown that the optimal design of the suspension damping ratio effectively improves the vehicle ride comfort,and thus provides a useful reference for the dynamic design of the vehicle suspension.
作者
李韶华
赵俊武
张志达
LI Shaohua;ZHAO Junwu;ZHANG Zhida(School of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;Key Laboratory of Tra±c Safety and Control in Hebei, Shijiazhuang 050043, China)
出处
《力学与实践》
北大核心
2018年第1期13-17,12,共6页
Mechanics in Engineering
基金
国家自然科学基金资助项目(11472180
11572207)
关键词
车辆
悬架系统
减振器
阻尼匹配
vehicle
suspension system
shock absorber
damping matching
