典型文献
On dynamic analysis method for large-scale train-track-substructure interaction
文献摘要：
Train-track-substructure dynamic interaction is an extension of the vehicle-track coupled dynamics.It contributes to evaluate dynamic interaction and perfor-mance between train-track system and its substructures.For the first time,this work devotes to presenting engi-neering practical methods for modeling and solving such large-scale train-track-substructure interaction sys-tems from a unified viewpoint.In this study,a train con-sists of several multi-rigid-body vehicles,and the track is modeled by various finite elements.The track length needs only satisfy the length of a train plus boundary length at two sides,despite how long the train moves on the track.The substructures and their interaction matrices to the upper track are established as independent modules,with no need for additionally building the track structures above substructures,and accordingly saving computational cost.Track-substructure local coordinates are defined to assist the confirming of the overlapped portions between the train-track system and the substructural system to effec-tively combine the cyclic calculation and iterative solution procedures.The advancement of this model lies in its convenience,efficiency and accuracy in continuously considering the vibration participation of multi-types of substructures against the moving of a train on the track.Numerical examples have shown the effectiveness of this method;besides,influence of substructures on train-track dynamic behaviors is illustrated accompanied by clarifying excitation difference of different track irregularity spectrums.
文献关键词：
中图分类号：
作者姓名：
Lei Xu
作者机构：
School of Civil Engineering,Central South University,Changsha 410075,China;National Engineering Laboratory for High-Speed Railway Construction,Changsha 410075,China
文献出处：
引用格式：
[1]Lei Xu-.On dynamic analysis method for large-scale train-track-substructure interaction)[J].铁道工程科学（英文）,2022(02):162-182
A类：
devotes,substructural
B类：
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AB值：
0.556147
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