摘要
分析一弹性薄壁充液圆柱壳，从Fugge壳体方程和均匀流场中的声波方程出发，利用边界条件；推导出声振耦合系统的频散方程。用傅氏变换求得在周向简谐力作用下输入能量流的表达式，并用沿复波数域的纯实轴进行数值积分的方法求得其结果，管内流体流速对结果的影响也进行了讨论与分析。
The vibrational characteristics and the input power flow of a cylindrical shell filled with fluid are investigated. Based on Flugge's shell equations, the sound wave equation for the fluid field and the boundary condition at the fluid-structure interface, the dispersion equation for this coupled system is deduced. By using Fourier transforms, the equation of the vibrational power flow from a line circumferential cosine harmonic force is obtained. An integrate numerically method is used t0 calculate the result and the effect of an internal flow on the result is also discussed.
出处
《声学学报》
EI
CSCD
北大核心
1998年第6期509-514,共6页
Acta Acustica
基金
国家自然科学基金!19404005
关键词
振动噪声
流速
圆柱壳
充液管道
输入能量流
Dispersion (waves)
Elasticity
Shells (structures)
Wave equations
