Finite element methods for the interaction of acoustic fluids with elastic solids

Isaac Harari*, Gabriel Blejer

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Finite element methods for exterior problems of time-harmonic acoustic-structure interaction are developed. Exterior boundary conditions are derived from and exact relation between the solution and its derivatives on an artificial boundary by the DtN method, yielding an equivalent problem in a bounded region that is suitable for domain-based computation. Galerkin/least-squares numerical difficulties that result from employing traditional Galerkin methods. The Galerkin/least-squares method is designed to yield dispersion-free finite element solutions to model problems, leading to superior performance on general, multi-dimensional configurations. Two-one dimensional models are investigated over a wide range of combinations of material properties of both media.

Original languageEnglish
Title of host publication15th Biennial Conference on Mechanical Vibration and Noise
EditorsK.W. Wang, B. Yang, J.Q. Sun, K. Seto, K. Yoshida, al et al
PublisherAmerican Society of Mechanical Engineers (ASME)
Edition3 Pt B/1
StatePublished - 1995
EventProceedings of the 1995 ASME Design Engineering Technical Conference. Part C - Boston, MA, USA
Duration: 17 Sep 199520 Sep 1995

Publication series

NameAmerican Society of Mechanical Engineers, Design Engineering Division (Publication) DE
Number3 Pt B/1
Volume84

Conference

ConferenceProceedings of the 1995 ASME Design Engineering Technical Conference. Part C
CityBoston, MA, USA
Period17/09/9520/09/95

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