摘要
在振动和噪声控制工程中,人们广泛使用各种粘弹性阻尼材料,并将它们粘贴在结构上减少结构振动和噪声.本文研究在圆柱壳上周期性粘贴阻尼材料后,该复合圆柱壳中的波传播和功率流.分析结果表明阻尼层的刚度和损耗因子极大地影响圆柱壳中的波传播和功率流.对相同体积的阻尼材料,增加阻尼层的厚度可比增加阻尼层的长度更有利于减少功率流.
Structures with viscoelastic coatings are widely used to control noise and vibration. In this paper vibrational power flow in cylindrical shells with periodic coatings are investigated. It is found that the stiffness and damping factor of coatings greatly influence the wave propagation and power flow. For the same volume of viscoelastic materials, it is more beneficial to increase the thickness of coating than to increase the length of coating.
出处
《振动工程学报》
EI
CSCD
1993年第1期1-9,共9页
Journal of Vibration Engineering
关键词
周期结构
功率流
复合圆柱壳
振动
噪声控制
: periodic structures, power flow, viscoelastic damping, layered shells, vibration control
