| 轴系纵振对双层圆柱壳体水下声辐射的影响研究 |
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| 引用本文： | 曹贻鹏,张文平.轴系纵振对双层圆柱壳体水下声辐射的影响研究[J].船舶力学,2007,11(2):293-299. |
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| 作者姓名： | 曹贻鹏 张文平 |
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| 作者单位： | 哈尔滨工程大学,黑龙江,哈尔滨,150001;哈尔滨工程大学,黑龙江,哈尔滨,150001 |
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| 摘 要： | 采用有限元/边界元方法(FEM/BEM)对推进轴系纵振引起的双层圆柱壳水下辐射噪声特性进行研究.使用ANSYS有限元软件建立了流固耦合的有限元模型,计算了流-固耦合状态下结构振动位移响应.利用边界元技术对结构水下辐射噪声特性进行研究,并对推力轴承的布置位置和结构进行了改变,从而改变了激振力的大小及传递途径,对轴系纵振引起的结构水下辐射噪声起到了一定的改善.
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| 关 键 词： | 振动与声辐射 流固耦合 有限元法 边界元法 |
| 文章编号： | 1007-7294(2007)02-0293-07 |
| 修稿时间： | 2006年4月27日 |
A study on the effects of the longitudinal vibration of shafting on acoustic radiation from underwater double cylindrical shell |
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| CAO Yi-peng,ZHANG Wen-ping.A study on the effects of the longitudinal vibration of shafting on acoustic radiation from underwater double cylindrical shell[J].Journal of Ship Mechanics,2007,11(2):293-299. |
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| Authors: | CAO Yi-peng ZHANG Wen-ping |
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| Abstract: | The vibration and radiation induced by longitudinal vibration of shafting of underwater double cylindrical shell are calculated by FEM/BEM.A fluid-structure coupled model is built up by finite element method,and the vibration response of structure is calculated by the ANSYS.The characteristics of structural acoustic radiation are investigated by boundary element method.The location and configuration of thrust bearing are changed,resulting in modifying the amplitude and propagation path of input force,so the acoustic radiations of double cylindrical shell underwater are reduced. |
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| Keywords: | vibration and acoustic radiation structural-acoustic coupling finite element method boundary element mothod |
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