A trailer car dynamics model considering brake rigging of a high-speed train and its application  

作　　者：Zhiwei Wang Linchuan Yang Jiliang Mo Song Zhu Wenwei Jin 

机构地区：[1]School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China [2]CRRC Qishuyan Institute Co.,Ltd,Changzhou 213011,China

出　　处：《Railway Engineering Science》2023年第3期269-280,共12页铁道工程科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52205217 and U22A20181);the Natural Science Foundation of Sichuan(No.2022NSFSC1964).

摘　　要：Brake systems are essential for the speed regulation or braking of a high-speed train.The vehicle dynamic performance under braking condition is complex and directly affects the reliability and running safety.To reveal the vehicle dynamic behaviour in braking process,a comprehensive trailer car dynamics model(TCDM)considering brake systems is established in this paper.The dynamic interactions between the brake system and the other connected components are achieved using the brake disc-pad frictions,brake suspension systems,and wheel-rail interactions.The force and motion transmission from the brake system to the wheel-rail interface is performed by the proposed TCDM excited by track irregularity.In addition,the validity of TCDM is verified by experimental test results.On this basis,the dynamic behaviour of the coupled system is simulated and discussed.The findings indicate that the braking force significantly affects vehicle dynamic behaviour including the wheel-rail forces,suspension forces,wheelset torsional vibration,etc.The dynamic interactions within the brake system are also significantly affected by the vehicle vibration due to track irregularity.Besides,the developed TCDM can be further employed to the dynamic assessment of such a coupled mechanical system under different braking conditions.

关 键 词：Brake system Disc-pad frictions Wheel-rail interactions Track irregularity High-speed train 

分 类 号：U270.35[机械工程—车辆工程] U211.5[交通运输工程—载运工具运用工程]