| 车辆-轨道系统振动响应分析--Timoshenko梁与Euler梁轨道模型的比较 |
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| 引用本文： | 徐志胜,翟婉明,王开云,王其昌.车辆-轨道系统振动响应分析--Timoshenko梁与Euler梁轨道模型的比较[J].地震工程与工程振动,2003,23(6):74-79. |
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| 作者姓名： | 徐志胜 翟婉明 王开云 王其昌 |
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| 作者单位： | 西南交通大学,列车与线路研究所,四川,成都,610031 |
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| 基金项目： | 国家自然科学基金，四川省应用基础研究计划，60178061，，， |
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| 摘 要： | 近年来，铁路的高速化、高运量化以及轻微的地震灾害等因素加速了轨道结构的沉降或变形，导致车辆轨道系统振动的加剧。本文运用车辆-轨道耦合动力学理论，编制了基于Timoehenko梁钢轨模型的车辆-轨道耦合振动仿真分析软件，分析了车辆-轨道系统的垂向振动特性，并与基于Euler梁模型的VICT软件的仿真结果进行了比较分析。结果表明：仿真结果与VICT的仿真结果基本一致，但在较高频域，前者能更好地反映轮轨系统的高频特性。因而，在研究轮轨高频振动及轮轨噪声时。采用Timoshenko梁钢轨模型更具合理性。
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| 关 键 词： | 车辆-轨道耦合动力学 车辆振动 轨道振动 Timoehenko梁钢 |
| 文章编号： | 1000-1301(2003)06-0074-06 |
Analysis of vehicle-track system vibration(Comparison between Timoshenko beam and Euler beam track model) |
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| XU Zhi-sheng,ZHAI Wan-ming,WANG Kai-yun,WANG Qi-chang.Analysis of vehicle-track system vibration(Comparison between Timoshenko beam and Euler beam track model)[J].Earthquake Engineering and Engineering Vibration,2003,23(6):74-79. |
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| Authors: | XU Zhi-sheng ZHAI Wan-ming WANG Kai-yun WANG Qi-chang |
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| Abstract: | The subsiding or deformation occurs because of the raise of the speed and capacity of train and the slight earthquake damage in recent years. In this paper, Based on the theory of vehicle-track coupling dynamics, a software for vehicle-track coupling vibration analysis, in which the rail is assumed to be a Timoshenko beam resting on the discrete sleepers, is successfully compiled. The vibration characteristics of vehicle and track caused by welded rail joint irregularity are investigated. It is made clear that the results are basically confident of those by VICT software based on the Bernoulli-euler beam, however, the model based on Timoshenko beam can interpret the vibration characteristics of higher frequency for the vehicle-track system better than the former. It is shown that the new model is reasonable for investigating the dynamics of vehicle and track system, especially in the case of investigating the characters of higher frequency vibration of vehicle and track system or wheel/rail noise. |
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| Keywords: | vehicle-track coupling dynamics vehicle vibration track vibration timoshenko beam bernoulli-euler beam track model wheel/rail noise |
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