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Titolo:
Analysis of stress-strain relationship in materials containing voids by means of plastic finite element method
Autore:
Shiraishi, H; Tabuchi, M;
Indirizzi:
Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan Natl Res Inst Met Tsukuba Ibaraki Japan 3050047 a, Ibaraki 3050047, Japan
Titolo Testata:
JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
fascicolo: 3, volume: 37, anno: 2000,
pagine: 288 - 299
SICI:
0022-3131(200003)37:3<288:AOSRIM>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
DUCTILE FRACTURE; GROWTH; MODELS; COALESCENCE; SOLIDS;
Keywords:
irradiation embrittlement; void lattice; work-hardening; void size; stress-strain analysis; finite element method; continuum body mechanics;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Shiraishi, H Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan Natl Res Inst Met Tsukuba Ibaraki Japan 3050047 50047, Japan
Citazione:
H. Shiraishi e M. Tabuchi, "Analysis of stress-strain relationship in materials containing voids by means of plastic finite element method", J NUC SCI T, 37(3), 2000, pp. 288-299

Abstract

Applying the finite element method in two dimensions, an analysis is performed to derive the stress-strain relationship of material containing voids in matrix: and which is subjected to large deformation. The conditions assumed for the analysis are applicability of continuum body mechanics, Mises yield criterion, J2 flow theory. power work-hardening, plane stress in two-dimensional system and uniform cyclically recurring void distribution. Taking as example a case of material presenting 0.3 work-hardening, it is indicated from the analysis that:With voids arrayed in square lattice, total elongation would be little affected by change in void size;With a void spacing in lattice of 10 mu m, a uniform elongation 12-14% should be obtained in a wide range of void sizes from 0.01 to 8.0 mu m;Tensile strength should start to lower at a void areal fraction of around 1%;A sharply lowered uniform elongation of a level far below 1% should be presented by material of low work-hardening exponent. The severe decline of ducility seen with 316 stainless steel upon neutron irradiation at temperatures around 600K is interpreted as resulting from a combination of low work-hardening and the presence of voids in matrix.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 20:48:59