A dilatational plasticity theory for viscoplastic materials

被引：10

作者：

Chen, B

Huang, Y

Liu, C

Wu, PD

MacEwen, SR

机构：

[1] Univ Illinois, Dept Mech & Ind Engn, Urbana, IL 61801 USA

[2] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA

[3] Alcan Int Ltd, Kingston, ON K7L 5L9, Canada

来源：

MECHANICS OF MATERIALS | 2004年 / 36卷 / 08期

关键词：

Gurson model; dilatational plasticity; viscoplastic material; void growth;

D O I：

10.1016/j.mechmat.2002.07.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dilatational plasticity theory of [J. Engng. Mater. Tech. 99 (1977) 2] is generalized in this paper for viscoplastic materials. A unit-cell model of a viscoplastic matrix containing a microvoid is adopted to establish the viscoplastic constitutive relations for voided, dilating materials. Approximate analytic constitutive relations are proposed, which not only have the correct asymptotic limits but also agree well with the unit-cell model. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：679 / 689

页数：11

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