| 水下发射航行体出水过程瞬态响应的谱分析方法 |
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| 作者姓名： | 吕海波 岳之光 武龙龙 李明 赵振军 |
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| 作者单位： | 北京宇航系统工程研究所,北京宇航系统工程研究所,北京宇航系统工程研究所,北京宇航系统工程研究所,北京宇航系统工程研究所 |
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| 基金项目： | 总装备部预研基金（9140A14060311HT1901） |
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| 摘 要： | 水下航行体在穿越水面时,受到移动式空泡溃灭压力作用,激起结构较大瞬态响应,因此其出水问题是工程设计的关注焦点。针对移动载荷作用下的水下航行体的瞬态响应问题,提出了基于冲击响应谱的谱分析方法,对于多模态下的综合方法进行了研究和比较,并对航行体出水动态响应进行了分析。采用本文方法可以在频域中迅速地获得结构动态响应解,并与时域解具有较好的一致性,且可以考虑外力随机分布下的动态响应,具有较好的适应性。
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| 关 键 词： | 移动载荷 瞬态响应 空泡溃灭 冲击谱 |
A Spectrum Analysis Method of Dynamic Response of Underwater Vehicles under Moving Loads |
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| Authors: | LYU Hai-bo YUE Zhi-guang WU Long-long LI Ming and ZHAO Zhen-jun |
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| Institution: | Beijing Institute of Astronautical Systems Engineering,Beijing Institute of Astronautical Systems Engineering,Beijing Institute of Astronautical Systems Engineering,Beijing Institute of Astronautical Systems Engineering and Beijing Institute of Astronautical Systems Engineering |
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| Abstract: | The moving cavitation collapse pressure is the major excitation of structural transient response of underwater vehicles in the water exiting process, which is an important focus in engeering design. A spectrum anslysis method based on shock response spectrum is applied to solve the dynamic response problem of underwater vehicles under moving loads. Different mode combination methods are analyzed and compared with experiments. The structure dynamic response results is able to obtained rapidly in frequency domain with this spectrum analysis method. The results also show good agreement with the time domain solution. Besides, the random distribution of loads is concerned in the method, which meets the reality well. |
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