Simulation of a Shinkansen train on the railway structure during an earthquake
Simulation of a Shinkansen train on the railway structure during an earthquake
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DOI：
10.1007/s13160-011-0022-4
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发表时间：
2011-02
影响因子：
0.9
通讯作者：
M. Tanabe;N. Matsumoto;H. Wakui;M. Sogabe
中科院分区：
文献类型：
--
作者：
M. Tanabe;N. Matsumoto;H. Wakui;M. Sogabe
给出了一种有效的计算方法来求解地震期间新干线列车（日本子弹头列车）和铁路结构的联合运动。火车的运动用多体动力学来表达。描述了一个简单的力学模型来表达地震期间轮轨之间的相互作用。开发了一种轨道单元，其中轨道横截面平面内的运动由多体动力学表示，面外运动由有限元法表示。开发了三维非线性弹簧单元来有效地表达地震期间循环荷载下混凝土铁路结构的弹塑性行为。铁路结构使用各种有限元和轨道单元进行建模。模态方法已被用来有效地求解地震期间火车和铁路结构的大规模非线性运动方程。基于本方法，开发了用于模拟地震期间新干线列车在铁路结构上运行的计算机程序。并通过数值例子进行了论证。
An efficient computational method to solve combined motion of a Shinkansen train (bullet train in Japan) and the railway structure during an earthquake is given. The motion of the train is expressed in multibody dynamics. A simple mechanical model to express the interaction between wheel and rail during an earthquake is described. A rail element has been developed, where the motion in the plane of the cross-section of rail is expressed by multibody dynamics and the motion in the out-of-plane is expressed by FEM. A three-dimensional nonlinear spring element has been developed to express the elastic-plastic behavior in a concrete railway structure under cyclic loads during an earthquake effectively. The railway structure is modeled with various finite elements and also with rail elements. A modal method has been employed to solve large-scale nonlinear equations of motion of the train and railway structure during an earthquake effectively. Based on the present method a computer program for the simulation of a Shinkansen train running on the railway structure during an earthquake has been developed. Numerical examples are demonstrated.