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Titolo:
A variational principle for the formulation of partitioned structural systems
Autore:
Park, KC; Felippa, CA;
Indirizzi:
Univ Colorado, Dept Aerosp Engn Sci, Boulder, CO 80309 USA Univ Colorado Boulder CO USA 80309 Aerosp Engn Sci, Boulder, CO 80309 USA Univ Colorado, Ctr Aerosp Struct, Boulder, CO 80309 USA Univ Colorado Boulder CO USA 80309 r Aerosp Struct, Boulder, CO 80309 USA
Titolo Testata:
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
fascicolo: 1-3, volume: 47, anno: 2000,
pagine: 395 - 418
SICI:
0029-5981(20000110)47:1-3<395:AVPFTF>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
2-LEVEL FETI METHOD; MECHANICS; ALGORITHM; ELEMENTS;
Keywords:
variational principles; hybrid principles; interface potentials; partitioned analysis; multilevel analysis; Lagrange multipliers; finite element methods; non-matching meshes; structural dynamics; parallel computation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Felippa, CA Univ Colorado, Dept Aerosp Engn Sci, Campus Box 429, Boulder, CO 80309 USA Univ Colorado Campus Box 429 Boulder CO USA 80309 CO 80309 USA
Citazione:
K.C. Park e C.A. Felippa, "A variational principle for the formulation of partitioned structural systems", INT J NUM M, 47(1-3), 2000, pp. 395-418

Abstract

A continuum-based variational principle is presented for the formulation of the discrete governing equations of partitioned structural systems. This application includes coupled substructures as well as subdomains obtained by mesh decomposition. The present variational principle is derived by a series of modifications of a hybrid functional originally proposed by Atluri for finite element development. The interface is treated by a displacement frame and a localized version of the method of Lagrange multipliers. Interior displacements are decomposed into rigid-body and deformational componentsto handle floating subdomains. Both static and dynamic versions are considered. An important application of the present principle is the treatment ofnonmatching meshes that arise from various sources such as separate discretization of substructures, independent mesh refinement, and global-local analysis. The present principle is compared with that of a globalized versionof the multiplier method. Copyright (C) 2000 John Wiley & Sons, Ltd.

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Documento generato il 09/07/20 alle ore 01:36:59