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Titolo:
A FINITE-ELEMENT APPROACH TO ANISOTROPIC DAMAGE OF DUCTILE MATERIALS IN LARGE DEFORMATIONS .2. FINITE-ELEMENT FORMULATION AND APPLICATIONS
Autore:
SHIN JG; NHO IS; YIM SJ;
Indirizzi:
SEOUL NATL UNIV,DEPT NAVAL ARCHITECTURE & OCEAN ENGN SEOUL 151742 SOUTH KOREA CHUNGNAM NATL UNIV,DEPT NAVAL ARCHITECTURE & OCEAN ENGN TAEJON 305764SOUTH KOREA
Titolo Testata:
International journal of fracture
fascicolo: 3, volume: 84, anno: 1997,
pagine: 279 - 295
SICI:
0376-9429(1997)84:3<279:AFATAD>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
MECHANICS; FRACTURE;
Keywords:
CONTINUUM DAMAGE MECHANICS; FINITE ELEMENT METHOD; LARGE DEFORMATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
J.G. Shin et al., "A FINITE-ELEMENT APPROACH TO ANISOTROPIC DAMAGE OF DUCTILE MATERIALS IN LARGE DEFORMATIONS .2. FINITE-ELEMENT FORMULATION AND APPLICATIONS", International journal of fracture, 84(3), 1997, pp. 279-295

Abstract

A finite element analysis model for material and geometrical non-linearities due to large plastic deformations of ductile materials is presented using the continuum damage mechanics approach. To overcome limitations of the conventional plastic analysis, a fourth-order tensor damage, defined in Part I of this paper to represent the stiffness degradation in the finite strain regime, is incorporated. General forms of an updated Lagrangian (U.L.) finite element procedure are formulated tosolve the governing equations of the coupled elastic-plastic-damage analysis, and a computer program is developed for two-dimensional planestress/strain problems. A numerical algorithm to treat the anisotropic damage is proposed in addition to the non-linear incremental solution algorithm of the U.L. formulation. Selected examples, compared with published results, show the validity of the presented finite element approach. Finally, the necking phenomenon of a plate with a hole is studied to explore plastic damage in large strain deformations.

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Documento generato il 18/01/20 alle ore 11:38:21