Dynamic performance analysis of floating slab track system considering flexible wheelset

被引：3
|
作者：
Bin, Yan [1 ]
Liu, Pan [1 ]
Lei, Xu [1 ]
Xiangyun, Deng [2 ]
Wei, Liu [3 ,4 ]
Xianggang, Du [4 ]
机构：
[1] Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China
[2] Southeast Univ, Sch Civil Engn, Nanjing 210096, Peoples R China
[3] Zhuzhou Times New Mat Technol Co Ltd, Zhuzhou 412007, Peoples R China
[4] China Acad Railway Sci Corp Ltd, Railway Engn Res Inst, Beijing 100081, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 393卷
基金：
中国国家自然科学基金;
关键词：
Wheelset flexibility; Floating slab track; Incremental numerical integration; Rubber spring; Dynamic performance; VIBRATION REDUCTION; TESTS;
D O I：
10.1016/j.conbuildmat.2023.132074
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Floating slab track (FST) has been widely used in urban rail transportation. To analyze the dynamic performance of the vehicle-FST system accurately, a vehicle-FST dynamic interaction model considering the flexibility of wheelsets is established. A method for flexible wheelset-rail relationship is described in detail. In addition, a virtual degrees of freedom method is adopted to improve the computational efficiency. To solve the stiffness nonlinearity of the rubber spring, an incremental numerical integration and matrices updating method is adopted. The numerical validation shows the reliable of the incremental numerical integration. Finally, the influence of the rubber spring parameters, stiffness nonlinearity of the rubber spring and wheelset flexibility on the dynamic performance of the system is analyzed in detail from the perspective of the frequency-domain and time-domain.
引用
收藏
页数：13
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