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A study of flow localization around voids by a grid method

A study of flow localization around voids by a grid method JOURN A L O F M AT E R IALS SCIENCE LETT ERS 17 (1 998 ) 2 23± 226 A study of ¯ow localization around voids by a grid method J. F A NG, S. Y. NI Department of Mechanics and Engineering Science, Beijing University, Beijing 100 871, People's Republic of China The growth and coalescence of microvoids is one of hardening, with maximum extensibility of 15% for the principal mechanisms of fracture failure of many void-containing materials. In the step-by-step loading ductile materials like metals, alloys and polymers. procedure, the plastic strains of the matrix around Some analytical models have been developed to the voids were measured with the help of the present constitutive relations for void-containing deformed grids observed by a microscope and materials, such as Gurson's equations for ductile recorded by a CCD camera. For a cross grid of porous medium with a rigid ± plastic solid approx- rectangular brightness distribution with the grid imation [1], and other modi®ed models to predicate pitches p and p in the x and y directions, x0 y0 the yield criterion based on void linking, including respectively, the brightness function f(x, y) can be that from numerical analysis of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science Letters Springer Journals

A study of flow localization around voids by a grid method

Journal of Materials Science Letters , Volume 17 (3) – Sep 29, 2004

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References (5)

Publisher
Springer Journals
Copyright
Copyright © 1997 by Chapman and Hall
Subject
Material Science; Characterization and Evaluation of Materials; Industrial Chemistry/Chemical Engineering; Polymer Sciences; Mechanics
ISSN
0261-8028
eISSN
1573-4811
DOI
10.1023/A:1006588312677
Publisher site
See Article on Publisher Site

Abstract

JOURN A L O F M AT E R IALS SCIENCE LETT ERS 17 (1 998 ) 2 23± 226 A study of ¯ow localization around voids by a grid method J. F A NG, S. Y. NI Department of Mechanics and Engineering Science, Beijing University, Beijing 100 871, People's Republic of China The growth and coalescence of microvoids is one of hardening, with maximum extensibility of 15% for the principal mechanisms of fracture failure of many void-containing materials. In the step-by-step loading ductile materials like metals, alloys and polymers. procedure, the plastic strains of the matrix around Some analytical models have been developed to the voids were measured with the help of the present constitutive relations for void-containing deformed grids observed by a microscope and materials, such as Gurson's equations for ductile recorded by a CCD camera. For a cross grid of porous medium with a rigid ± plastic solid approx- rectangular brightness distribution with the grid imation [1], and other modi®ed models to predicate pitches p and p in the x and y directions, x0 y0 the yield criterion based on void linking, including respectively, the brightness function f(x, y) can be that from numerical analysis of

Journal

Journal of Materials Science LettersSpringer Journals

Published: Sep 29, 2004

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