具有弹性扭转悬架的非公路车辆平顺性及侧倾稳定性分析  

Ride and roll stability analysis of off-road vehicles with torsio-elastic suspension

作　　者：柴牧 Subhash Rakheja 上官文斌[1] CHAI Mu;RAKHEJA Subhash;SHANGGUAN Wenbin(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广州510641

出　　处：《振动与冲击》2019年第4期191-198,212,共9页Journal of Vibration and Shock

基　　金：国家自然科学基金(51475171)

摘　　要：建立了装备弹性扭转悬架的三维非公路车辆模型,研究了不同弹性扭转悬架布置方式下车辆的平顺性及侧倾稳定性。由后轴装备弹性扭转悬架的车辆试验验证了模型的准确性;通过对驾驶室座椅处的振动响应和车身侧倾角响应的分析可知,弹性扭转悬架不仅可提高车辆的平顺性,还能提高其侧倾稳定性;且具有前后弹性扭转悬架的车辆对座椅处各方向的振动抑制效果最好,而仅前轴装有弹性扭转悬架比仅后轴有弹性扭转悬架车辆具有更好的乘坐舒适性;最后对比了载荷变化对不同悬架布置方式下车辆振动响应的影响。结果表明,载荷变化对装备弹性扭转悬架的车辆影响较小。A three-dimensional ride dynamic off-road vehicle model with torsio-elastic suspension was formulated to investigate the potential of ride comfort improvement as well as roll stability preservation for different suspension arrangements.The model validation was based on the field measurements of a rear-suspended vehicle with torsio-elastic suspension.According to the vibration response analysis near the operator seat and the roll angle of vehicle chassis,the results show that the torsio-elastic suspension could improve the ride performance as well as increase the roll stability of the vehicle.The results also illustrate that the fully-suspended vehicle could obviously decrease the vibration at the driver seat along all axes,and front-suspended vehicel could provide a batter ride performance,compared the rear-suspended vehicle.The loading effect was also analysed for vehicles with different suspension options,which illustrates that the torsio-elastic suspension is less sensitive to variations in the load.

关 键 词：非公路车辆 弹性扭转悬架 平顺性 侧倾稳定性 

分 类 号：U273.99[机械工程—车辆工程]