通过周期环板和附连流体的两同心圆柱壳体间的振动耦合效应  

Vibration coupling effects between two concentric cylindrical shells with periodic annular plates and entrained fluid

作　　者：殷学文[1,2] 王贡献[3] 华宏星[4] 沈荣瀛[4] 

机构地区：[1]江苏省特种设备安全监督检验研究院无锡分院,无锡214171 [2]上海交通大学机械系统与振动国家重点实验室,上海200240 [3]武汉理工大学物流工程学院,武汉430063 [4]江苏省特种设各安全监督检验研究院无锡分院,无锡214171

出　　处：《声学学报》2009年第1期87-95,共9页Acta Acustica

摘　　要：理论研究了两个同心圆柱壳体间通过周期环饭和附连流体的耦合效应。在环板内只有准纵波存在的假定下,给出环板的反作用力的表达式,并建立外壳体的声辐射解析表达式。无限长双层壳体的数值分析结果和舱段模型的实验结果一致。通过数值结果同时分析了声学流体和周期环板的载荷特征,以及它们对外壳体远场声辐射的影响。The coupling effects between two concentric cylindrical shells with periodic annular plates as well as entrained fluid are investigated theoretically. A formula for the reactive forces by the annular plates is derived on the assumption that only quasi-longitudinal waves exist in the annular plates and an analytical expression for acoustic radiation from the outer shell is developed. Comparisons of numerical results for infinite two-walled cylindrical shell to measured data for a cabin model are in good agreement. Numerical results are presented for analyzing the characteristics of the loadings due to the acoustic fluid and the periodic annular plates, and their influences on the outer shell＇s farfield acoustic radiation.

关 键 词：耦合效应 圆柱壳体 环板 流体 周期 解析表达式 振动 反作用力 

分 类 号：O422.2[理学—声学]