| 受路面激励引起车桥响应频谱的研究 |
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| 引用本文： | 余学文,包忠有.受路面激励引起车桥响应频谱的研究[J].华东交通大学学报,2008,25(2):29-33. |
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| 作者姓名： | 余学文 包忠有 |
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| 作者单位： | 华东交通大学,土木建筑学院,江西,南昌,330013;华东交通大学,土木建筑学院,江西,南昌,330013 |
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| 摘 要： | 用频谱分析的方法研究了车桥系统由路面不平顺引起的动力响应．为定性地分析车桥系统提供了一个新的方法．文中视车桥为两个子系统。用迭代法解出了它们的频谱响应，避免了以往所使用的数值积分分析法,本文从分析车桥系统传递函数的频谱入手，研究了车桥系统的基频与车速的关系，并且分析了车桥的质量比、固有频率比、车速及阻尼对系统动力稳定性的影响，从而导出较为有利的行车速度．
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| 关 键 词： | 频谱分析 频谱响应 车桥系统 |
| 文章编号： | 1005-0523(2008)02-0029-05 |
| 修稿时间： | 2007年11月25 |
Response Spectra of Vehicle-bridge System Stimulated by Road Surface |
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| YU Xue-wen,BAO Zhong-you.Response Spectra of Vehicle-bridge System Stimulated by Road Surface[J].Journal of East China Jiaotong University,2008,25(2):29-33. |
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| Authors: | YU Xue-wen BAO Zhong-you |
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| Institution: | (School of Civil Engineering and Architecture. ,East China Jiaotong University,Nanchang 330013,China) |
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| Abstract: | A new method for the dynamic study of vehicle-bridge system has been presented here.The transferred spectra of the system's interaction due to roughness of road surface are studied by iterative method in frequency domain.The bridge and vehicle are treated as two subsystems and their equations of motion are solved alternately to derive the approximate response spectra.In this paper the lowest frequency of the system and its dynamic stability are investigated by spectral analysis.The advantageous vehicle speeds have been obtained as a result. |
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| Keywords: | spectra analyses spectra response vehicle-bridge system |
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