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Titolo:
CONSTRAINT ENERGY-MOMENTUM ALGORITHM AND ITS APPLICATION TO NONLINEARDYNAMICS OF SHELLS
Autore:
KUHL D; RAMM E;
Indirizzi:
UNIV STUTTGART,INST BAUSTAT STUTTGART GERMANY UNIV STUTTGART,INST BAUSTAT STUTTGART GERMANY
Titolo Testata:
Computer methods in applied mechanics and engineering
fascicolo: 3-4, volume: 136, anno: 1996,
pagine: 293 - 315
SICI:
0045-7825(1996)136:3-4<293:CEAAIA>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
IMPROVED NUMERICAL DISSIPATION; CONSERVING ALGORITHMS; NONLINEAR DYNAMICS; INTEGRATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
CompuMath Citation Index
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
D. Kuhl e E. Ramm, "CONSTRAINT ENERGY-MOMENTUM ALGORITHM AND ITS APPLICATION TO NONLINEARDYNAMICS OF SHELLS", Computer methods in applied mechanics and engineering, 136(3-4), 1996, pp. 293-315

Abstract

A modified time-integration method is developed for non-linear structural dynamics combining controllable algorithmic dissipation of highermodes and, at the same time, conservation of energy as well as linearand angular momentum. Although these features seem to be actually inconsistent, numerical stability with large time steps for dynamic buckling and snap-through problems as well as for dynamical systems with smooth solutions is guaranteed. Arbitrary implicit, one-step time-integration schemes with Newmark approximations are suitable for use as basic algorithms for the proposed method. The desired conservation attributes are obtained if the basic algorithm is augmented by energy and momentum constraints. The potential of the suggested algorithm is demonstrated by selected applications to non-linear dynamics of shell structures.

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Documento generato il 15/07/20 alle ore 07:53:14