偏心阻振质量阻抑振动波传递特性研究

姚熊亮;计方;钱德进;庞福振

振动与冲击 ›› 2010, Vol. 29 ›› Issue (1) : 48-52.

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PDF(1476 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (1) : 48-52.
论文

偏心阻振质量阻抑振动波传递特性研究

  • 姚熊亮1;计方1;钱德进2;庞福振1
作者信息 +

Research on vibration wave propagation from eccentric blocking masses

  • YAO Xiong-liang1;Ji Fang1;QIAN De-jin2;Pang Fu-zhen1
Author information +
文章历史 +

摘要

利用波动理论的分析、处理方法,分析了偏心阻振质量阻抑振动波传递的特性,给出了偏心阻振质量对平面弯曲波传递的阻抑公式;相应的模型实验分析表明测试所得数据与理论推导的结果变化趋势一致;同时借助数值仿真手段,将偏心阻振质量引入水下双壳动力舱段的减振降噪中。结果表明:阻振质量偏心布置时与其固定的船体板中发生波型变换,衍生波产生了附加隔声量(相对于对称布置),且附加隔声量的量值主要取决于波型变换的程度;偏心阻振质量有效的抑制了双壳动力舱段中高频段的声辐射。

Abstract

The characteristics of eccentric blocking masses attenuating propagation of vibration waves are analyzed on the basis of wave analysis method,and the formula of the impeding plane bending wave transmisstion is deduced.The corresponding model test indicated that the tendency of measured data is consistent with the data obtained by theoretical calculation.Meanwhile eccentric vibration isolation masses is leaded in the vibration isolation and noise reduction of power section of double cylindrical shell through numerical simulation. The results show that eccentric arranged blocking masses converted waves with mounted plane of ship hull,the derivated wave generate additional sound transmission loss (relative to the symmetric arrangement),and the additional sound transmission loss is mainly depended on the degree of wave conversion.Eccentric vibration isolation masses can effectively impede sound radiation of double cylindrical shell power section in high frequency.

关键词

波动分析法 / 偏心阻振质量 / 波型变换 / 隔声量

Key words

wave analysis method / eccentric blocking masses / wave conversion / sound transmission loss

引用本文

导出引用
姚熊亮;计方;钱德进;庞福振. 偏心阻振质量阻抑振动波传递特性研究[J]. 振动与冲击, 2010, 29(1): 48-52
YAO Xiong-liang;Ji Fang;QIAN De-jin;Pang Fu-zhen. Research on vibration wave propagation from eccentric blocking masses[J]. Journal of Vibration and Shock, 2010, 29(1): 48-52
中图分类号: U661.44   

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