A Family of Early-Time Approximations for Fluid-Structure Interaction

[+] Author and Article Information
C. A. Felippa

Applied Mechanics Laboratory, Lockheed Palo Alto Research Laboratory, Palo Alto, Calif. 94304

J. Appl. Mech 47(4), 703-708 (Dec 01, 1980) (6 pages) doi:10.1115/1.3153777 History: Received March 01, 1980; Revised June 01, 1980; Online July 21, 2009


A hierarchical family of early-time, high-frequency asymptotic, surface interaction approximations is derived for a structure submerged in an infinite acoustic fluid. Kirchhoff’s retarded-potential integro-differential formulation is used as exact source formula. The well-known plane-wave and curved-wave approximations result as the first two members of the hierarchy. Acoustic impedance characteristics of the first four members are exhibited for several sample geometries.

Copyright © 1980 by ASME
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