Novel discrete element modeling coupled with finite element method for investigating ballasted railway track dynamics

被引：28
|
作者：
Nishiura, Daisuke [1 ]
Sakai, Hirotaka [2 ]
Aikawa, Akira [2 ]
Tsuzuki, Satori [1 ]
Sakaguchi, Hide [1 ]
机构：
[1] Japan Agcy Marine Earth Sci & Technol, Dept Math Sci & Adv Technol, Yokosuka, Kanagawa 2360001, Japan
[2] Railway Tech Res Inst, Railway Dynam Div, Tokyo 1858540, Japan
来源：
COMPUTERS AND GEOTECHNICS | 2018年 / 96卷
基金：
日本学术振兴会;
关键词：
Discrete element model; Viscoelastic deformation; Finite element method; Railway dynamics; Ballasted track deterioration; Impact response; Vibration analysis; HIGH-SPEED TRAIN; WAVE-PROPAGATION; DEM; BEHAVIOR; PERFORMANCE; SIMULATION; CONCRETE; VEHICLE; 2D;
D O I：
10.1016/j.compgeo.2017.10.011
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A quadruple discrete element method (QDEM) was developed for viscoelastic multi-body dynamics. The sleeper motion modeled using QDEM was coupled with the rail motion modeled using a finite element method (FEM). The traffic impact response of a ballast particle and a sleeper was analyzed. The three-dimensional spatial distribution of ballast particle displacement was clearly revealed. Moreover, the ballast layer absorbed the low frequency vibration of the sleeper more effectively than its high frequency vibration. This study suggests that the proposed QDEM-FEM can provide greater insight into the impact response of ballasted railway tracks.
引用
收藏
页码：40 / 54
页数：15
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