摘要
建立了空间7自由度车辆动力学模型,仿真生成了4轮随机路面时域激励.在此基础上建立了压电悬臂梁装置车载环境下的的车辆道路振动模型,进行耦合振动系统的频谱分析.通过仿真得到了车身质心的加速度频谱图,以及车身与悬架连接处的加速度频谱图,对比分析了不同的车速、路面等级和簧载质量下,车身振动的加速度幅值及振动频率.
Based on a vehicle dynamics model with 7degrees of freedom and the random road excitation in time domain,the coupling vibration model of vehicle-road system is set up,which a piezoelectric cantilever is installed on.Then the frequency analysis of the coupling vibration system is carried on.The acceleration spectrum of the body＇s mass center and the joint of the body and the suspension are obtained.Comparing with different speeds,different road grades and different sprung masses,the acceleration amplitude and the vibration frequency of the body vibration are gained finally.
出处
《武汉理工大学学报（交通科学与工程版）》
2015年第2期325-328,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
中央高校基本科研业务费专项资金资助(批准号:2013-IV-062)
关键词
车辆
道路
耦合振动
压电悬臂梁
vehicle
road
coupling vibration
piezoelectric cantilever
