| 自由表面效应对结构动力响应的影响 |
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| 引用本文： | 田子谦,李黎,陈志军.自由表面效应对结构动力响应的影响[J].华中科技大学学报(城市科学版),2004,21(4):75-77. |
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| 作者姓名： | 田子谦 李黎 陈志军 |
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| 作者单位： | 华中科技大学,土木工程与力学学院,湖北,武汉,430074 |
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| 摘 要： | 在计算海浪对单个小直径圆柱作用力的过程中．将圆柱考虑为一个理想化的广义单自由度体系，研究了自由表面效应对圆柱动力响应的影响，并利用莫里森方程对其中的阻力项进行线性化，同时结合随机振动的相关理论，得出了圆柱响应谱的表达式。与不考虑自由表面效应的结果进行了比较．
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| 关 键 词： | 自由表面效应 莫里森方程 随机波浪 响应谱 |
| 文章编号： | 1672-7037(2004)04-0075-03 |
| 修稿时间： | 2004年5月30日 |
Effects of Free Surface Fluctuation on Dynamic Response of Structures |
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| TIAN Zi-qianLI LiCHEN Zhi-jun.Effects of Free Surface Fluctuation on Dynamic Response of Structures[J].Journal of Huazhong University of Science and Technology,2004,21(4):75-77. |
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| Authors: | TIAN Zi-qianLI LiCHEN Zhi-jun |
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| Affiliation: | TIAN Zi-qian~1LI Li~1CHEN Zhi-jun~1 |
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| Abstract: | In the process of calculating the effect of wave fluctuation on the cylinder with small diameter, the cylinder is idealized as a generalized single DOF system and the effect of free surface fluctuation on the dynamical response of a cylinder is studied. The formulation of the response spectrum of cylinder is derived by linearizing the drag item with Morison formula and combining with the theory of random vibration. Finally the results are compared with those that do not consider the free surface fluctuation. |
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| Keywords: | free surface fluctuation Morison formula random wave response spectrum |
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