A yield function for anisotropic materials - Application to aluminum alloys

被引：262

作者：

Bron, F

Besson, J

机构：

[1] Ecole Natl Super Mines, Ctr Mat, F-91003 Evry, France

[2] Pechiney Ctr Rech Voreppe, F-38341 Voreppe, France

来源：

INTERNATIONAL JOURNAL OF PLASTICITY | 2004年 / 20卷 / 4-5期

关键词：

anisotropic material; yield function; finite element calculation;

D O I：

10.1016/j.ijplas.2003.06.001

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A phenomenological yield function is proposed to represent the plastic anisotropy of aluminum sheets. It is an extension of the functions given by Barlat et al. [Int. J. Plasticity 7 (1991) 693] and Karafillis and Boyce [J. Mech. Phys. Solids 41 (1993) 1859]. The anisotropy is represented by 12 parameters in the form of two fourth order symmetric tensors. Four other parameters influence the shape of the yield surface uniformly. The role of each parameter is described in detail. The convexity of the yield surface is proved. The implementation of the proposed yield function is done in the 3D general case in an object-oriented finite element code. It is used to represent the anisotropy of a 2024 aluminum thin sheet and the adjustment is excellent. Other anisotropic materials from the literature are also well described by the proposed yield function. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：937 / 963

页数：27

共 32 条

[21]

LAWRENCE C, 1994, 9416 U MARYL I SYST

[22] UPPER-BOUND ANISOTROPIC YIELD LOCUS CALCULATIONS ASSUMING (111)-PENCIL GLIDE [J].