Enhancement of the Hoffman yield criterion with an anisotropic hardening model

被引：17
作者：
Hashagen, F [1 ]
de Borst, R [1 ]
机构：
[1] Delft Univ Technol, Fac Aerosp Engn, Koiter Inst Delft, NL-2629 HS Delft, Netherlands
来源：
COMPUTERS & STRUCTURES | 2001年 / 79卷 / 06期
关键词：
plasticity; hardening; anisotropy; Hoffman; yield criterion;
D O I：
10.1016/S0045-7949(00)00164-4
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In this paper, an anisotropic hardening model was proposed for the Hoffman yield criterion. Hardening is described via the introduction of a hardening function in which nine hardening parameters are utilized. Each hardening parameter describes the hardening of its corresponding equivalent stress component independently from the other hardening components. The resulting local return-mapping algorithm and the tangent stiffness matrix are derived. The impact of this hardening hypothesis is studied with two benchmark tests. Furthermore, a modification of the model is introduced and its impact on the benchmark tests is studied. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：637 / 651
页数：15
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