Static strength and crashworthiness analysis of a train cowcatcher at a running speed of 160 km/h  

作　　者：Yanzhao Guo Lele Zhang Weiyuan Dou Yu Zhu Haifeng Zhang 

机构地区：[1]School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044,China [2]National International Science and Technology Cooperation Base on Railway Vehicle Operation Engineering,Beijing Jiaotong University,Beijing 100044,China [3]CRRC Changchun Railway Vehicles Co.,Ltd.,Changchun 130062,China

出　　处：《High-Speed Railway》2023年第4期258-264,共7页高速铁路（英文）

基　　金：supports by the National Natural Science Foundation of China(Grant No.52172353 and 52202431).

摘　　要：The cowcatcher is one of the unique devices at the front end of the train, which can remove obstacles on the track by crashing before the vehicle body to ensure the safety of the train. When a collision accident happens, the cowcatcher serves as the first energy-absorbing structure to dissipate and guide the collision energy. The design of the existing cowcatcher of multiple units generally focuses on the good ability to remove obstacles, while the secondary function, the crashworthiness of orderly deformation under collision, still needs further research. In this study, a finite element model of structural static load and collision analysis was established under standard EN 15227, with the cowcatcher for 160 km/h train as the prototype. Then the solution and simulation process was accomplished under the environment of ANSYS and LS-DYNA. The analysis results showed that the structural static strength of the current cowcatcher met the requirements of the standard EN 15227, and the longitudinal stiffness was evenly distributed. When removing the obstacles with low mass, the impact force was small and the structure would not produce obvious deformation;when removing the obstacles with large mass, the impact force was large and the shear fracture might occur at the connection of the cowcatcher.

关 键 词：Cowcatcher Passive safety Static strength Crashworthiness analysis 

分 类 号：U270.1[机械工程—车辆工程]