| 环肋椭圆柱壳-流场耦合系统自由振动的解析求解方法 |
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| 引用本文： | 方敏,朱翔,李天匀,金超超.环肋椭圆柱壳-流场耦合系统自由振动的解析求解方法[J].海洋工程,2018,36(4):60-69. |
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| 作者姓名： | 方敏 朱翔 李天匀 金超超 |
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| 作者单位： | 华中科技大学船舶与海洋工程学院;船舶与海洋水动力湖北省重点实验室;高新船舶与深海开发装备协同创新中心 |
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| 基金项目： | 国家自然科学基金项目（51479079,51579109） |
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| 摘 要： | 提出了分析环肋椭圆柱壳-流场耦合系统自由振动的一种解析求解方法。环肋通过"刚度均摊"到均质椭圆柱壳体上,考虑流场对壳体振动特性的影响,通过Helmholtz方程描述声介质的波动,建立环肋椭圆柱壳-流场耦合系统的自由振动方程,进而求得耦合系统的自由振动固有频率。为了验证方法的准确性,将水下环肋椭圆柱壳退化成水下环肋圆柱壳和不加肋的水下椭圆柱光壳,两个退化模型的计算结果与已有文献结果吻合良好。并详细讨论了椭圆度、环肋间距等主要参数对耦合系统自由振动特性的影响。
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| 关 键 词： | 环肋椭圆柱壳 椭圆度 自由振动 环肋间距 |
Analytical method of free vibration characteristics of ring-stiffened elliptic cylindrical shell-fluid coupling system |
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| FANG Min,ZHU Xiang,LI Tianyun and JIN Chaochao.Analytical method of free vibration characteristics of ring-stiffened elliptic cylindrical shell-fluid coupling system[J].Ocean Engineering,2018,36(4):60-69. |
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| Authors: | FANG Min ZHU Xiang LI Tianyun and JIN Chaochao |
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| Institution: | School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Hubei Key Laboratory of Naval Architecture and Ocean Engineering Hydrodynamics, Wuhan 430074, China; 3. Collaborative Innovation Center for Advanced Ship and Deep Sea Exploration, Shanghai 200240, China,School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Hubei Key Laboratory of Naval Architecture and Ocean Engineering Hydrodynamics, Wuhan 430074, China; 3. Collaborative Innovation Center for Advanced Ship and Deep Sea Exploration, Shanghai 200240, China,School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Hubei Key Laboratory of Naval Architecture and Ocean Engineering Hydrodynamics, Wuhan 430074, China; 3. Collaborative Innovation Center for Advanced Ship and Deep Sea Exploration, Shanghai 200240, China and School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Hubei Key Laboratory of Naval Architecture and Ocean Engineering Hydrodynamics, Wuhan 430074, China; 3. Collaborative Innovation Center for Advanced Ship and Deep Sea Exploration, Shanghai 200240, China |
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| Abstract: | |
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| Keywords: | ring-stiffened elliptic cylindrical shell ellipticity free vibration ring rib spacing |
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