| 移动单元法在车辆—无砟轨道—路基模型中的应用 |
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| 引用本文： | 王健,雷晓燕.移动单元法在车辆—无砟轨道—路基模型中的应用[J].华东交通大学学报,2011(6):12-16,120. |
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| 作者姓名： | 王健 雷晓燕 |
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| 作者单位： | 华东交通大学铁路环境振动与噪声教育部工程研究中心 |
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| 基金项目： | 国际科技合作与交流专项项目(2010DFA82340);国家自然科学基金项目(50978099) |
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| 摘 要： | 将移动单元法理论推广到无砟轨道的动力学研究当中,建立了新的列车—无砟轨道—路基耦合系统模型.模型离散为轨道单元和车辆单元,下部离散了的轨道单元模型采用移动单元法理论求出其单元质量矩阵,阻尼矩阵和刚度矩阵,上部车辆单元离散为一节整车模型,利用有限元和Lagrange方程计算出车辆单元的质量矩阵,阻尼矩阵和刚度矩阵.该计算...
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| 关 键 词： | 移动单元法 有限元法 车辆单元 轨道单元 振动特性 |
Application of Moving Element Method in the Vehicle-Ballastless Track-Sugared Model |
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| Wang Jian,Lei Xiaoyan.Application of Moving Element Method in the Vehicle-Ballastless Track-Sugared Model[J].Journal of East China Jiaotong University,2011(6):12-16,120. |
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| Authors: | Wang Jian Lei Xiaoyan |
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| Institution: | ,(Engineering Research Center of Railway Environment Vibration and Noise,Ministry of Education,East China Jiaotong University,Nanchang 330013,China) |
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| Abstract: | In this paper, a new moving element method is extended to the dynamical analysis of slab tracks and a new model of vehicle-slab track-subgrade coupling system is presented. The whole model is only required to discrete into vehicle elements and slab ballastless track elements. Via moving element method, the associated stiffness matrix, mass matrix and damping matrix for track element are deduced for these track elements. And the vehicle element model has 26 degrees of freedom. Based on Lagrange equation, the corresponding stiffness matrix, mass matrix and damping matrix are formulated. This model has the advantages of simple programming, efficient computing speed and eliminating border effect. The two different dynamic responses with and without track irregularity are investigated. |
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| Keywords: | moving element method finite element method vehicle element track element vibration characteristic |
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