| 焊接缺陷对环肋圆柱壳水下辐射噪声的影响 |
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| 引用本文： | 黄振卫,周其斗,纪刚,王路才,王霂.焊接缺陷对环肋圆柱壳水下辐射噪声的影响[J].中国舰船研究,2011,6(6):58-65. |
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| 作者姓名： | 黄振卫 周其斗 纪刚 王路才 王霂 |
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| 作者单位： | 海军工程大学船舶与动力学院,湖北武汉,430033 |
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| 摘 要： | 为了研究焊接缺陷对水下结构振动辐射噪声的影响,以出现焊接缺陷的环肋圆柱壳为研究对象,采用结构有限元耦合流体边界元法计算了结构在不同的焊接缺陷大小、缺陷对应中心角度、含缺陷肋骨的位置以及含缺陷的肋骨数量时的水下辐射噪声,得到不同工况下结构振动声辐射噪声的频率响应曲线,并对数值计算结果进行了初步的比较和分析。结果表明,焊接缺陷的大小、对应中心角度、含缺陷肋骨的位置以及含缺陷肋骨的数量对结构的模态和水下辐射噪声指向性均有一定的影响。但总体上,靠近舱壁的肋骨出现焊接缺陷时对结构的辐射噪声影响较小。在实际工程应用中,可以根据焊接缺陷的大小、对应中心角度、缺陷肋骨位置以及缺陷肋骨数量综合分析缺陷对整个结构声学特性的影响。结论对分析潜艇辐射噪声测量结果有一定的参考价值。
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| 关 键 词： | 环肋圆柱壳 焊接缺陷 流固耦合 有限元 边界元 辐射噪声 潜艇 |
Effect of Welded Defect in Stiffened Cylindrical Shell on Underwater Radiated Noise |
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| Huang Zhen-wei,Zhou Qi-dou,Ji Gang,Wang Lu-cai,Wang Mu.Effect of Welded Defect in Stiffened Cylindrical Shell on Underwater Radiated Noise[J].Chinese Journal of Ship Research,2011,6(6):58-65. |
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| Authors: | Huang Zhen-wei Zhou Qi-dou Ji Gang Wang Lu-cai Wang Mu |
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| Institution: | Huang Zhen-wei Zhou Qi-dou Ji Gang Wang Lu-cai Wang Mu College of Naval Architecture and Power,Naval University of Engineerin,Wuhan 430033,China |
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| Abstract: | In order to investigate the effects on the underwater radiated noise of a stiffened cylindrical shell due to welded defect,a stiffened cylindrical shell with welded defects was studied via finite element method coupled with boundary element method.The underwater radiated noise of the structure with different lengths,angles,positions of defect and numbers of rib containing defects was calculated,and the frequency response function of radiated noise was obtained.The comparison and analysis of the results show... |
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| Keywords: | stiffened cylindrical shell welded defect fluid-structural interaction finite element boundary element radiated noise submarine |
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