| 多跨梁在移动车载作用下的动响应分析 |
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| 引用本文： | 程远胜.多跨梁在移动车载作用下的动响应分析[J].华中科技大学学报(自然科学版),2002,30(1):81-83. |
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| 作者姓名： | 程远胜 |
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| 作者单位： | 华中科技大学交通科学与工程学院,武汉,430074 |
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| 摘 要： | 分析多跨梁在移动车载作用下的动响应，采用动力刚度法求出精确的多跨梁振动模态，用模态迭加法求解；推导了N个车辆作用时的车－梁单元矩阵，用有限元法求解，数值计算结果表明用两种方法分析得到的结果相符。
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| 关 键 词： | 移动车辆 多跨梁 动响应 模态迭加法 有限元法 车一梁单元矩阵 振动模态 |
| 文章编号： | 1671-4512(2002)01-0081-03 |
| 修稿时间： | 2001年3月27日 |
Analysis of dynamic response of multi-span beams caused by moving vehicles |
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| Cheng YuanshengProf., College of Traffic. Sci. & Eng.,HUST,Wuhan ,China..Analysis of dynamic response of multi-span beams caused by moving vehicles[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2002,30(1):81-83. |
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| Authors: | Cheng YuanshengProf College of Traffic Sci & Eng HUST Wuhan China |
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| Institution: | Cheng YuanshengProf., College of Traffic. Sci. & Eng.,HUST,Wuhan 430074,China. |
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| Abstract: | In this paper, dynamic response of multi span beams caused by moving vehicles has been analyzed by using modal superposition method and the finite element method. Dynamic stiffness method is employed to solve the exact mode shapes of multi span beams in modal superposition analysis. The formulation for the vehicle beam element is extended to the case of any number of moving vehicles and the improved element is applied to analyze the dynamic response of a multi span beam caused by moving vehicles. Numerical results show that results from the modal superposition method agree well with those from the finite element method. |
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| Keywords: | moving vehicles multi span beams dynamic response modal superposition method finite element method |
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