流体可压缩性对半无限流体域中结构振动的影响

INFLUENCE OF FLUID COMPRESSIBILITY ON STRUCTURAL VIBRATION IN HALF-SPACE FLUID DOMAIN

本文探讨了流体可压缩性对半无限流体域中结构振动的影响。研究结果表明 :在“软”边界 (自由表面 )半无限流体域中 ,流体可压缩性对结构振动响应的影响要比在“硬”边界 (刚性壁面 )半无限流体域和无界流体域中的影响小 ,特别是在低频和结构离自由液面较近的情况下 ,流体可压缩性对结构振动响应影响不大。

The influence of fluid compressibility on structural vibration in the half-space fluid domain is discussed. The results show that the fluid compressibility exerts less influence on vibrational response of structures in the half-space fluid domain with a soft surface than in that with a hard plane and also less than that in the full-space fluid domain. Especially, with low frequency vibration and short distance between structure and soft surface, the influence of fluid compressibility on the vibrational response of structures is not obvious.