分析模型选取对螺旋桨脉动激励引起的水下结构振动与声辐射影响研究

王志伟;曹贻鹏;张文平;刘文帅

振动与冲击 ›› 2012, Vol. 31 ›› Issue (7) : 166-170.

PDF(1744 KB)
PDF(1744 KB)
振动与冲击 ›› 2012, Vol. 31 ›› Issue (7) : 166-170.
论文

分析模型选取对螺旋桨脉动激励引起的水下结构振动与声辐射影响研究

  • 王志伟1,3;曹贻鹏2;张文平2;刘文帅3
作者信息 +

The effect of analysis model selection on underwater structure vibration and acoustic radiation caused by propeller disturbing force

  • Wang Zhi-wei1,3;Cao Yi-peng2;Zhang Wen-ping2;Liu Wen-shuai3
Author information +
文章历史 +

摘要

由于激振力作用位置的原因,目前关于水下结构振动与辐射噪声特性问题的分析模型多选用舱段或尾部结构,本文使用有限元/直接边界元方法,分析螺旋桨—轴系—壳体结构这一典型的尾部受迫振动问题,研究不同模型选取对结构振动及声辐射特性的影响,分析表明,使用局部模型将对结构的振动特性、辐射声压分布等特性产生影响,分析结果中略掉了较多的结构振动模态,从而使分析结果不全面,对于水下结构的振动响应分析,建议采用整体结构作为分析模型。

Abstract

Because of the exciting location of disturbing force, the cabin and stern model are always chosen to be analysis model for underwater structure acoustic radiation. In this paper, the finite element analysis and direct boundary element analysis are adopted and the propeller, shafting and structure are coupled together as analysis model, the effect of different analysis model selection on underwater structure acoustic radiation is calculated. The results show that the stern model has great effects on structure vibration and underwater sound pressure distributing. Some structure vibration modes are ignored, which only gets partly analysis result. For analysis structure vibration response completely, the whole model of underwater structure must be adopted.

关键词

螺旋桨激振力 / 振动 / 辐射噪声 / 水下结构 / 轴系振动

Key words

the propeller disturbing force / vibration / acoustic radiation / underwater structure / vibration of shafting

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王志伟;曹贻鹏;张文平;刘文帅. 分析模型选取对螺旋桨脉动激励引起的水下结构振动与声辐射影响研究[J]. 振动与冲击, 2012, 31(7): 166-170
Wang Zhi-wei;Cao Yi-peng;Zhang Wen-ping;Liu Wen-shuai. The effect of analysis model selection on underwater structure vibration and acoustic radiation caused by propeller disturbing force[J]. Journal of Vibration and Shock, 2012, 31(7): 166-170

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