| Parametric studies on relationships between flutter derivatives of slender bridge （Ⅱ） |
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| 引用本文： | 徐旭.Parametric studies on relationships between flutter derivatives of slender bridge （Ⅱ）[J].应用数学和力学(英文版),2009,30(3):335-341. |
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| 作者姓名： | 徐旭 |
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| 作者单位： | [1]Department of Civil Engineering, Shanghai University, Shanghai 200072, P. R. China [2]不详, Shanghai University, Shanghai 200072, P. R. China |
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| 基金项目： | Acknowledgements The author is grateful to Prof. Zhi-yuan CAO （Tongji University） for his guidance. |
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| 摘 要： | Based on curve fitting of coefficients of three component forces of the Messina Straits Bridge, and the previously proposed semi-analytical expressions of flutter derivatives of flexible structure, the change of flutter derivatives of slender bridge cross-section with respect to its aerodynamic center, rotational speed and angle variation is studied using a parametric method. The calculated results are compared with the measured ones, and expressions of flutter derivatives of the Messina Straits Bridge are derived. The intrinsic relationships existing in flutter derivatives are validated again. It is shown that the influence of the rotational speed on flutter derivatives is not negligible. Therefore, it provides an additional semi-analytical approach for analyzing flutter derivatives of the bridge with streamlined cross-section to get its aerodynamic information.
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| 关 键 词： | 颤振导数 气动导数 海峡大桥 旋转速度 解析表达式 半解析方法 组成部分 曲线拟合 |
| 收稿时间： | 2008-12-08 |
Parametric studies on relationships between flutter derivatives of slender bridge (II) |
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| Xu Xu.Parametric studies on relationships between flutter derivatives of slender bridge (II)[J].Applied Mathematics and Mechanics(English Edition),2009,30(3):335-341. |
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| Authors: | Xu Xu |
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| Institution: | Department of Civil Engineering, Shanghai University, Shanghai 200072, P. R. China |
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| Abstract: | Based on curve fitting of coefficients of three component forces of the Messina Straits Bridge, and the previously proposed
semi-analytical expressions of flutter derivatives of flexible structure, the change of flutter derivatives of slender bridge
cross-section with respect to its aerodynamic center, rotational speed and angle variation is studied using a parametric method.
The calculated results are compared with the measured ones, and expressions of flutter derivatives of the Messina Straits
Bridge are derived. The intrinsic relationships existing in flutter derivatives are validated again. It is shown that the
influence of the rotational speed on flutter derivatives is not negligible. Therefore, it provides an additional semi-analytical
approach for analyzing flutter derivatives of the bridge with streamlined cross-section to get its aerodynamic information.
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| Keywords: | flutter derivative slender bridge parametric analysis |
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