| 桥梁颤振气动导数识别的迭代法 |
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| 引用本文： | 黄方林,陈政清. 桥梁颤振气动导数识别的迭代法[J]. 振动与冲击, 2002, 21(2): 64-67 |
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| 作者姓名： | 黄方林 陈政清 |
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| 作者单位： | 中南大学铁道校区土木建筑学院,长沙,410075 |
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| 基金项目： | 国家自然科学基金资助项目 (编号 597780 4 3) |
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| 摘 要： | 本文提出一种利用自由振动响应通过年顿－拉夫逊迭代同时识别出桥梁全部8个颤振气动导的方法。此法具有对迭代初值要求不高，识别结果稳定的特点，并具有一定的抗噪声干扰能力。数字仿真与实物试验结果表明本文方法有效，可行。
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| 关 键 词： | 桥梁 迭代法 颤振 气动导数 参数识别 非定常流 自由振动效应 DFP变尺度法 |
| 修稿时间： | 2001-08-25 |
Iterative Method for Identification of Flutter Derivatives of a Sectional Bridge Model |
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| Huang Fanglin Chen Zhengqing. Iterative Method for Identification of Flutter Derivatives of a Sectional Bridge Model[J]. Journal of Vibration and Shock, 2002, 21(2): 64-67 |
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| Authors: | Huang Fanglin Chen Zhengqing |
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| Abstract: | A method,with which all of the eight flutter derivatives for a sectional bridge model can be determined from free response data by using Newton_Raphson's iterative method,is presented in the paper.The advantages of the method lie in that the initial values for iteration can be determined easily and the results identified are stable.In addition,the method proposed in the paper still works well under the disturbance of noise.Results of numerical simulations and specimen tests show that the method is effective and reliable. |
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| Keywords: | flutter aerodynamic derivative parameter identification unsteady flow bridge |
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