Radial Impulsive Excitation Of Infinite Fluid-Filled Elastic Cylindrical Shells

✍ Scribed by B.J. Brévart; C.R. Fuller

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 367 KB
• Volume: 177
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1994.1443

✦ Synopsis

The impulsive radial excitation of fluid-filled elastic cylinders is analytically studied using a double Fourier transform in the wavenumber and the frequency domains. In particular, the contribution of various waves to the structural response and their propagation paths are investigated by evaluating individual pole contributions to the total response using the method of residues. For axisymmetric excitation, the results surprisingly demonstrate that although the excitation is structural, the major path of vibrational energy to the structural observation point is through the fluid medium. For the beam mode type of excitation, two major paths are identified; the disturbance propagates either through low frequency structural components or through the fluid medium as higher frequency components. The work adds new insight into the behaviour of coupled pipe-fluid systems