A new yield function for porous materials

被引：18

作者：

Alves, Luis M. M. ^{[1
]}

Martins, Paulo A. F. ^{[1
]}

Rodrigues, Jorge M. C. ^{[1
]}

机构：

[1] Univ Tecn Lisboa, Dept Engn Mecan, Inst Super Tecn, P-1049001 Lisbon, Portugal

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2006年 / 179卷 / 1-3期

关键词：

powder forging; finite element method (FEM); experimentation;

D O I：

10.1016/j.jmatprotec.2006.03.091

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Densification of sintered copper under uniaxial compression is analyzed by means of three different plasticity criteria-Shima and Oyane [S. Shima, M. Oyane, Plasticity theory for porous metals, Int. J. Mech. Sci. 18 (1976) 285-291], Doraivelu et al. [S.M. Doraivelu, H.L. Gegel, J.S. Gunasekera, J.C. Malas, J.T. Morgan, J.F. Thomas, A new yield function for compressible P/M materials, Int. J. Mech. Sci. 26 (9/10) (1984) 527-535] and Lee and Kim [D.N. Lee, H.S. Kim, Plasticity yield behaviour of porous metals, Powder Metall. 35 (1992) 275-279]. Theoretical predictions are compared with experimental data and served as a basis for developing a new yield function for compressible P/M materials. The proposed yield function is not only capable of providing a better agreement with the experiments as its implementation into an existing finite element computer program proves to be successful for the numerical modelling of a powder forged component. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：36 / 43

页数：8

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