| 轨枕空吊对轨枕动态性能的影响 |
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| 引用本文： | 张健,吴昌华,肖新标,温泽峰,金学松.轨枕空吊对轨枕动态性能的影响[J].西南交通大学学报,2010,45(2). |
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| 作者姓名： | 张健 吴昌华 肖新标 温泽峰 金学松 |
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| 作者单位： | 1. 大连理工大学工业装备结构分析国家重点实验室,辽宁大连,116024
2. 西南交通大学牵引动力国家重点实验室,四川成都,610031 |
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| 基金项目： | 科技部科研项目，国家自然科学基金 |
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| 摘 要： | 为研究轨枕空吊对轨枕动态响应的影响,建立了车辆-轨道垂向耦合动力学模型.假设车辆模型为多刚体系统,用Euler梁模拟离散支撑的钢轨,轨枕视为弹性地基上的Euler梁,利用显式积分法求解车辆-轨道非线性动力学方程.结果表明:当轨枕部分悬空或完全悬空时,影响轨枕最大弯矩的位置;轨枕空吊数目越多,轨枕的弯矩越大;轨枕底座的完全悬空对邻近空吊区的轨枕动态行为影响较大.
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| 关 键 词： | 轨枕空吊 动态响应 车辆-轨道耦合动力学 有限元法. |
Effect of Unsupported Sleepers on Sleeper Dynamic Response |
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| ZHANG Jian,WU Changhua,XIAO Xinbiao,WEN zefeng,JIN Xueson.Effect of Unsupported Sleepers on Sleeper Dynamic Response[J].Journal of Southwest Jiaotong University,2010,45(2). |
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| Authors: | ZHANG Jian WU Changhua XIAO Xinbiao WEN zefeng JIN Xueson |
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| Institution: | ZHANG Jian1,WU Changhua1,XIAO Xinbiao2,WEN Zefeng2,JIN Xuesong2(1.State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China,2.State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | A vertical vehicle-track coupling dynamic model was established to analyze the effect of different unsupported sleeper situations on the sleeper dynamic response in the vertical direction.In the model,the vehicle is treated as a multi-rigid-body system,and the rails are assumed to be Euler beams supported by the discrete sleepers resting on an elastic foundation.The non-linear dynamic equations of the vehicle-track coupling model are solved with the explicit integration method.Numerical results indicate tha... |
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| Keywords: | unsupported sleeper dynamic response vehicle-track coupling dynamics finite element method |
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