VIBRATIONAL POWER FLOW INPUT AND TRANSMISSION IN A CIRCULAR CYLINDRICAL SHELL FILLED WITH FLUID

✍ Scribed by M.B. XU; W.H. ZHANG

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 234 KB
• Volume: 234
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1999.2880

✦ Synopsis

In this paper, the characteristics of vibrational power #ow in an in"nite elastic circular cylindrical shell "lled with #uid are investigated. The FluK gge thin shell theory and Helmholtz equation are employed respectively in analyzing the wave motion in the shell wall and the sound "eld in the #uid. The coupling condition on the inner surface of the shell wall is introduced to obtain the vibrational equation of this coupled system. By using Fourier transform and its inverse transform, the input power into the coupled system excited by a driving force is studied. Along the shell axial direction, the transmission of the power #ow carried by di!erent internal forces of the shell wall and by the #uid is also studied. The results show that the input power #ow and the power #ow transmission depend mainly upon the characteristics of the free propagating waves in this coupled system.