某型卡车驾驶室横向摆动的分析研究  

Transverse Vibration Analysis of a Truck Cab

作　　者：刘建娅[1] 李舜酩[1] 张袁元[1] 安木金[1] 

机构地区：[1]南京航空航天大学,南京210016

出　　处：《机械科学与技术》2011年第4期578-581,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：江苏省自然科学基金资助项目(BK2007197);国家自然科学基金项目(50675099)资助

摘　　要：建立了针对某型卡车的整车振动系统模型,分别对各子系统进行了模态参数识别,结合激励频率分析,找到了在65 km/h下驾驶室横向摆动的原因。该车速下车轮转动频率与车架系统的第1阶扭转固有频率接近,导致了驾驶室横向摆动。对车架改进和车轮动平衡后的试验结果表明,驾驶室底板自功率谱降低了76.7%,汽车平顺性明显改善。We built vehicle vibration system modal of a truck and performed modal analysis of every sub-system.The result from modal analysis and excitation frequency shows that the main reason for transverse vibration of the truck under the velocity of 65 km/h is as follows： the excitation from wheel unbalance in this velocity is close to the first-order natural frequency of the frame sub-system.The experimental result shows that the PSD of the cab floor is reduced by 76.7% and the ride comfort of the truck is improved significantly by controlling wheel unbalance.

关 键 词：驾驶室 横向振动 模态分析 自功率谱 

分 类 号：U463.32[机械工程—车辆工程]