| 全模态颤振分析的实用方法 |
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| 引用本文： | 胡峰强,陈艾荣.全模态颤振分析的实用方法[J].公路交通科技,2007,24(2):77-79. |
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| 作者姓名： | 胡峰强 陈艾荣 |
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| 作者单位： | 1. 同济大学,桥梁工程系,上海,200092;南昌大学,建筑工程学院,江西,南昌,330029
2. 同济大学,桥梁工程系,上海,200092 |
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| 摘 要： | 基于结构的有限元全物理模型,提出了一种双参数全模态颤振分析方法,并在ANSYS中实现。在有限元模型中采用MATRIX27单元模拟桥面主梁的自激力,将系统的气动运动控制方程转化成广义特征值问题。最后,对具有理想平板截面的简支梁结构进行全模态颤振分析,分析结果与精确解十分接近,证明了全模态颤振计算方法的可靠性和有效性。
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| 关 键 词： | 桥梁抗风 全模态颤振分析 双参数 ANSYS |
| 文章编号： | 1002-0268(2007)02-0077-03 |
| 修稿时间： | 2005-08-05 |
Full-mode Flutter Analysis with Double Parameters and its Realization in ANSYS |
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| HU Feng-qiang,CHEN Ai-rong.Full-mode Flutter Analysis with Double Parameters and its Realization in ANSYS[J].Journal of Highway and Transportation Research and Development,2007,24(2):77-79. |
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| Authors: | HU Feng-qiang CHEN Ai-rong |
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| Institution: | 1. School of Department of Bridge Engineering, Tongji University, Shanghai 200092, China; 2. School of Civil Engineering, Nanchang University, Jiangxi Nanchang 330029, China |
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| Abstract: | A new approach of full-mode flutter analysis with double parameters is proposed,which is realized in ANSYS,based on the full-order discretized physical model of structure.The governing equation of the system is converted into a generalized eigenvalue problem.In the finite element model,the MATRIX27 element is used to simulate the self-excited force acting on bridge deck.Finally,the full-mode flutter analysis of a simple-supported beam with idealized thin-plane section is performed.And the result is identical with theoretical value.The proposed method has been proved reliable in its methodology and efficiency. |
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| Keywords: | wind-resistance of bridge full-mode flutter analysis double parameters ANSYS |
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