| 基于l1范数稀疏解的水下双层圆柱壳振动声辐射预报影响因素研究 |
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| 引用本文： | 叶海林,陈美霞,陶襄樊.基于l1范数稀疏解的水下双层圆柱壳振动声辐射预报影响因素研究[J].船舶力学,2019,23(2):234-244. |
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| 作者姓名： | 叶海林 陈美霞 陶襄樊 |
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| 作者单位： | 华中科技大学 船舶与海洋工程学院,武汉,430074;武汉第二船舶设计研究所,武汉,430064 |
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| 摘 要： | 基于模态叠加法理论,采用l1范数稀疏解方法,实现了水下双层圆柱壳由内壳有限测点振速值重构得到内、外壳振速空间分布,进而基于边界元理论对结构水下辐射声场进行预报。通过数值计算,分析了模态数目、测点数目和模态振型误差等因素对振动声辐射预报结果的影响,为指导速度场重构时模态数目、测点数目的选取提供了一定的理论依据;结果表明基于l1范数稀疏解声学预报方法对模态振型误差有一定的鲁棒性。最后开展了水下典型双层圆柱壳结构振动声辐射预报的试验研究,可为工程领域结构的声振预报提供一定的指导思路。
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| 关 键 词： | l1范数稀疏解 振动声辐射预报 水下圆柱壳 鲁棒性 |
Research on influencing factors of reconstruction of vibration and sound for double cylindrical shell underwater based on l_1-norm sparse solution |
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| YE Hai-lin,CHEN Mei-xia,TAO Xiang-fan.Research on influencing factors of reconstruction of vibration and sound for double cylindrical shell underwater based on l_1-norm sparse solution[J].Journal of Ship Mechanics,2019,23(2):234-244. |
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| Authors: | YE Hai-lin CHEN Mei-xia TAO Xiang-fan |
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| Institution: | (College of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;The Second Ship Design Research Institute of Wuhan,Wuhan 430064,China) |
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| Abstract: | YE Hai-lin;CHEN Mei-xia;TAO Xiang-fan(College of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;The Second Ship Design Research Institute of Wuhan,Wuhan 430064,China) |
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| Keywords: | l1-norm sparse solution reconstruction of vibration and sound field double cylindrical shell underwater robustness |
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