Effects of the stress state on plasticity and ductile failure of an aluminum 5083 alloy

被引：201

作者：

Gao, Xiaosheng ^{[1
]}

Zhang, Tingting ^{[1
]}

Hayden, Matthew ^{[2
]}

Roe, Charles ^{[2
]}

机构：

[1] Univ Akron, Dept Mech Engn, 302 Buchtel Common, Akron, OH 44325 USA

[2] USN, Ctr Surface Warfare, Alloy Dev & Mech Branch, Bethesda, MD 20817 USA

来源：

INTERNATIONAL JOURNAL OF PLASTICITY | 2009年 / 25卷 / 12期

关键词：

Hydrostatic stress; Lode angle; Third invariant J(3); Plasticity; Ductile failure; DEFORMATION-BEHAVIOR; VOID GROWTH; FRACTURE CHARACTERISTICS; HYDROSTATIC-PRESSURE; ELLIPSOIDAL CAVITIES; NUMERICAL-SIMULATION; NONSPHERICAL VOIDS; APPROXIMATE MODELS; RUPTURE MECHANISMS; COMBINED TENSION;

D O I：

10.1016/j.ijplas.2009.03.006

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The experimental and numerical work presented in this paper reveals that stress state has strong effects on both the plastic response and the ductile fracture behavior of an aluminum 5083 alloy. As a result, the hydrostatic stress and the third invariant of the stress deviator (which is related to the Lode angle) need to be incorporated in the material modeling. These findings challenge the classical J(2) plasticity theory and provide a blueprint for the establishment of the stress state dependent plasticity and ductile fracture models for aluminum structural reliability assessments. Further investigations are planned to advance, calibrate and validate the new plasticity and ductile fracture models. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2366 / 2382

页数：17

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