DISPLACEMENT PRESSURE-BASED MIXED FINITE-ELEMENT FORMULATIONS FOR ACOUSTIC FLUID-STRUCTURE INTERACTION PROBLEMS

Authors
WANG XD BATHE KJ
Citation
Xd. Wang et Kj. Bathe, DISPLACEMENT PRESSURE-BASED MIXED FINITE-ELEMENT FORMULATIONS FOR ACOUSTIC FLUID-STRUCTURE INTERACTION PROBLEMS, International journal for numerical methods in engineering, 40(11), 1997, pp. 2001-2017
Citations number
21
Categorie Soggetti
Computer Application, Chemistry & Engineering",Engineering,Mathematics
Journal title
International journal for numerical methods in engineering → ACNP
ISSN journal
00295981
Volume
40
Issue
11
Year of publication
1997
Pages
2001 - 2017
Database
ISI
SICI code
0029-5981(1997)40:11<2001:DPMFFF>2.0.ZU;2-M
Abstract
We present reliable finite element discretizations based on displaceme nt/pressure interpolations for the analysis of acoustic fluid-structur e interaction problems. The finite element interpolations are selected using the inf-sup condition, and emphasis is given to the fact that t he boundary conditions must satisfy the mass and momentum conservation . We show that with our analysis procedure no spurious non-zero freque ncies are encountered, as heretofore calculated with other displacemen t-based discretizations. (C) 1997 by John Wiley & Sons, Ltd.