高群涛, 张阿漫, 邱敏芝. 水下方盒结构振动与声辐射相关性研究[J]. 中国舰船研究, 2008, 3(6): 22-25,33. DOI: 10.3969/j.issn.1673-3185.2008.06.005
引用本文: 高群涛, 张阿漫, 邱敏芝. 水下方盒结构振动与声辐射相关性研究[J]. 中国舰船研究, 2008, 3(6): 22-25,33. DOI: 10.3969/j.issn.1673-3185.2008.06.005
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Gao Quntao, Zhang Aman, Qiu Minzhi. Research of the Correlation Between Vibration and Radiation of an Underwater Box Structure[J]. Chinese Journal of Ship Research, 2008, 3(6): 22-25,33. DOI: 10.3969/j.issn.1673-3185.2008.06.005
Citation: Gao Quntao, Zhang Aman, Qiu Minzhi. Research of the Correlation Between Vibration and Radiation of an Underwater Box Structure[J]. Chinese Journal of Ship Research, 2008, 3(6): 22-25,33. DOI: 10.3969/j.issn.1673-3185.2008.06.005
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水下方盒结构振动与声辐射相关性研究

Research of the Correlation Between Vibration and Radiation of an Underwater Box Structure

    摘要
  • 摘要: 针对水下结构振动与声辐射的耦合问题,重点研究了水下方盒结构在简谐激励作用下结构振动和声辐射间的相关性。在计算结构声振响应时,采用有限元结合边界元的算法,即在考虑流固耦合影响下采用有限元法计算结构的振动响应,在此基础上采用边界元法求解无限介质中的Helmholtz方程,从而求得结构的辐射声场。在结构振动和声辐射响应的基础上,计算了几个典型位置声辐射与激励点振动间的关联系数,讨论了它们的关联性。最后得出结论：除了激励源附近位置外,声辐射与结构振动间的关联性是很强的。

     

    Abstract: Based on the coupled acoustic-vibration feature for underwater structures, the correlation between vibration and sound radiation for a box structure is investigated. In calculating the acousticvibration response of the box, the FEM and BEM are used. FEM is used to obtain the vibration response due to the coupled fluid-solid interaction. Based on FEM results, BEM is used to obtain the sound radiation by solving the Helmholtz equa tion. Through the computing results, the correlation between several typical locations and the exciting location is established and some comments are made. In the end, the conclusions are drawn that the correlation bet ween vibration and sound radiation is strong except near the exciting location.

     

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