有阻尼负载时圆柱壳的声传递特性分析  

Acoustic transmission analysis of cylindrical shell with viscoelastic layer coating

作　　者：姚熊亮[1] 王献忠 孙龙泉[1] 

机构地区：[1]哈尔滨工程大学船舶工程学院,哈尔滨150001

出　　处：《振动与冲击》2012年第15期116-120,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金资助项目(50779007);哈尔滨工程大学基金项目(GK2010260105)

摘　　要：分析研究有阻尼负载圆柱壳的声波透射问题,从经典薄壳理论出发,给出有阻尼负载的圆柱壳振动微分方程,结合均匀流场中的波动方程,利用流-固耦合边界条件,给出了声波传递损失的公式,并计算了相应的算例,研究了有阻尼负载圆柱壳中的声波传递特性。分析了声波入射角度、阻尼厚度、壳体厚度等对声波传递损失的影响,得到了有意义的结论,旨在为工程设计提供参考。Based on classical thin-shell theory,the differential equations of vibration of the cylindrical shell with free layer damping were deduced.The sound transmission loss was derived by conjoining the sound wave equation is homogeneous fluid field with the boundary conditions at the fluid-structure interfaces.A corresponding numerical example was given.The characteristics of sound transmission of cylindrical shell with viscoelastic layer coating were analyzed.The effects of incident wave angles,damping layer thickness,cylindrical shell radius and thickness on the transmission loss were discussed.

关 键 词：阻尼负载 圆柱壳 传递损失 波 

分 类 号：O326[理学—一般力学与力学基础] TB535[理学—力学]