文献类型：期刊文献

英文题名：Coupled vibration analysis of a train-rail-bridge system based on multi-body dynamics

作者：Chen, Z.J.[1]; Zhu, H.P.[1]; Qian, Z.Q.[2]; Li, J.[3]; Cao, H.Y.[1]

机构：[1] School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan, China; [2] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China; [3] China Railway Siyuan Survey and Design Group Co., Ltd., China

年份：2012

卷号：98

外文期刊名：Civil-Comp Proceedings

收录：EI(收录号：20192807158863)

语种：英文

外文关键词：Ballast (railroad track) - Railroad transportation - Vibration analysis - Unloading - Automobile bodies - Derailments - Computer software - Railroad bridges - Vehicle wheels - Railroad cars - Railroads - Steel bridges

摘要：A new methodology to analyse the coupled vibration of a train-rail-bridge is presented based on multi-body dynamics and finite element theory. In this paper, a visual multi-system simulation model is developed by using the Recursive Dynamic (RecurDyn) and ANSYS software. A 32m span simply supported box girder bridge with a ballast track is analysed as an example. The effect of the vehicle velocity, track irregularity, and the damping of the sleeper on the bridge’s dynamic performance are investigated and the safety assessment of vehicle operation is also implemented. The results indicate that the vibration of the main components of the coupled system can be solved correctly. It is found that wheel derailment happens when the velocity of the vehicle reaches 350km/h, while related indices such as the acceleration peak value of the vehicle exceed the evaluation criteria. Further analysis of the wheel track contact force indicates that it is reasonable and relatively conservative to evaluate the safety of train operations using a derailment coefficient and wheel unloading rate. ?Civil-Comp Press, 2012