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Titolo: Analysis of stressstrain 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:
 00223131(200003)37:3<288:AOSRIM>2.0.ZU;2V
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 DUCTILE FRACTURE; GROWTH; MODELS; COALESCENCE; SOLIDS;
 Keywords:
 irradiation embrittlement; void lattice; workhardening; void size; stressstrain 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 stressstrain relationship in materials containing voids by means of plastic finite element method", J NUC SCI T, 37(3), 2000, pp. 288299
Abstract
Applying the finite element method in two dimensions, an analysis is performed to derive the stressstrain 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 workhardening, plane stress in twodimensional system and uniform cyclically recurring void distribution. Taking as example a case of material presenting 0.3 workhardening, 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 1214% 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 workhardening 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 workhardening 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