摘要
同轴圆柱体弹性薄壳（以下简称双层壳）与内外壳间均匀流动的环形流所构成的双层壳－流耦合系统的频散特性，是研究该系统声振特性的基础。本文从Ｆｌｕｇｇｅ无限壳体方程和均匀流场中的声波方程出发，利用边界条件，对该系统的频散方程进行了推导，并给出了相应的算例。
The dispersion behaviour of the double shell-fluid system, which consists of two thin concentric cylindrical elastic shells (hereafter referred to as a double shell simply) coupled by the entrainedannular fluid, is a fundamental for investigation of it's vibroacoustical characteristics. Based on Flugge'sinfinite shell equation, the sound wave equation for the fluid field, and boundary conditions at the fluidstructure interfaces, the dispersion equation for the system is deduced and a corresponding numericalexample is given in the paper
出处
《声学学报》
EI
CSCD
北大核心
1996年第3期217-223,共7页
Acta Acustica
基金
国家教委博士点基金
关键词
双层壳-流耦合
频散方程
声振特性
Flow of fluids
Structural design
Vibrations (mechanical)
