Dynamic Rollover Prediction of Heavy Vehicles Considering Critical Frequency  

作　　者：Zhansheng Ye Weidong Xie Yuming Yin Zhijun Fu 

机构地区：[1]College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310023,China

出　　处：《Automotive Innovation》2020年第2期158-168,共11页汽车创新工程（英文）

基　　金：supported by the National Natural Science Foundation of China(NSFC)under Grant 51905483.

摘　　要：Rollover of commercial heavy vehicles can cause enormous economic losses and fatalities.It is easier for such vehicles to rollover if the driver’s steering frequency is close to the critical frequency of the vehicle’s roll motion;however,the critical roll frequency has rarely been investigated.In this study,the second-order transfer function between the steering input and roll angle was developed to calculate the critical frequency of the vehicle’s roll motion.The simulated spectrum and transfer function were then used to dynamically predict the peak lateral load transfer ratio.Laboratory experiments were conducted using a scaled vehicle to verify the critical roll frequency.The results suggest that the peak value of the lateral load transfer ratio during steering can be accurately determined from the driver’s input,and the critical roll frequency has a dominant effect on the dynamic rollover of heavy vehicles.

关 键 词：Vehicle rollover Dynamic rollover prediction Lateral load transfer ratio Critical frequency 

分 类 号：U46[机械工程—车辆工程]