A parallel hp-FEM infrastructure for three-dimensional structural acoustics

This paper describes a parallel three‐dimensional numerical infrastructure for the solution of a wide range of time‐harmonic problems in structural acoustics and vibration. High accuracy and rate of error‐convergence, in the mid‐frequency regime,is achieved by the use of hp‐finite and infinite eleme...

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Veröffentlicht in:International journal for numerical methods in engineering Jg. 68; H. 5; S. 583 - 603
Hauptverfasser: Dey, Saikat, Datta, Dibyendu K.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Chichester, UK John Wiley & Sons, Ltd 29.10.2006
Wiley
Schlagworte:
Accuracy
Acoustics
Applied sciences
Computation
Computational techniques
Computer science; control theory; systems
Computer systems and distributed systems. User interface
domain decomposition
Elastic scattering
Exact sciences and technology
FETI-DP
finite element
fluid-structure interaction
Fundamental areas of phenomenology (including applications)
Infrastructure
Mathematical methods in physics
Mathematical models
parallel
Parallel processing
Physics
Software
Solid mechanics
Structural acoustics and vibration
Structural and continuum mechanics
Three dimensional
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
finite element
Elastic scattering
Frequency sweeping
Parallel mechanism
Fluid structure interaction
Distributed computing
Modeling
Adaptive method
Frequency effect
Finite element method
Infinite element method
Infinite medium
parallel
Convergence rate
High performance
Parallel algorithm
Immersed body
Vibration
FETI-DP
Medium frequency
fluid-structure interaction
Linear algebra
Parallel computation
High frequency
Domain decomposition
Ductile cast iron
Structural acoustics
Structural analysis
ISSN:0029-5981, 1097-0207
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Beschreibung
Zusammenfassung:This paper describes a parallel three‐dimensional numerical infrastructure for the solution of a wide range of time‐harmonic problems in structural acoustics and vibration. High accuracy and rate of error‐convergence, in the mid‐frequency regime,is achieved by the use of hp‐finite and infinite element approximations. The infrastructure supports parallel computation in both single and multi‐frequency settings. Multi‐frequency solves utilize concurrent factoring of the frequency‐dependent linear algebraic systems and are naturally scalable. Scalability of large‐scale single‐frequency problems is realized by using FETI‐DP—an iterative domain‐decomposition scheme. Numerical examples are presented to cover applications in vibratory response of fluid‐filled elastic structures as well as radiation and scattering from elastic structures submerged in an infinite acoustic medium. We demonstrate both the numerical accuracy as well as parallel scalability of the infrastructure in terms of problem parameters that include wavenumber and number of frequencies, polynomial degree of finite/infinite element approximations as well as the number of processors. Scalability and accuracy is evaluated for both single and multiple frequency sweeps on four high‐performance parallel computing platforms: SGI Altix, SGI Origin, IBM p690 SP and Linux‐cluster. Results show good performance on shared as well as distributed‐memory architecture. Copyright © 2006 John Wiley & Sons, Ltd.
Bibliographie:ONR
ark:/67375/WNG-ZXRRL6G4-X
istex:5CA7B57C1129CFA232C9F5228EE961BFAAC90802
ArticleID:NME1730
NASA
Naval Research Laboratory - No. 7130
DoD-High Performance Computing Modernization Program
ARL
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0029-5981
1097-0207
DOI:10.1002/nme.1730