Prediction of limit strains in sheet metals by using new generalized yield criteria

被引：4

作者：

Ponalagusamy, R. ^{[1
]}

Narayanasamy, R.

Subramanian, K. R.

机构：

[1] Natl Inst Technol, Dept Math & Comp Applicat, Tiruchirappalli 620015, Tamil Nadu, India

[2] Natl Inst Technol, Dept Prod Engn, Tiruchirappalli 620015, Tamil Nadu, India

[3] Higher Secondary Sch, Natl Coll, Dept Math, Tiruchirappalli 620002, Tamil Nadu, India

来源：

MATERIALS & DESIGN | 2007年 / 28卷 / 03期

关键词：

generalized yield criteria; FLD; anisotropic parameters; powder metallurgy metal;

D O I：

10.1016/j.matdes.2005.10.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new form of yield theories considering an anisotropic parameter for porous sintered powder metallurgy metals have been derived and proposed in this technical paper. In addition to these, the flow rule with anisotropic parameter for porous metal is introduced. The mathematical expression for the calculation of flow stress in the case of simple compression of tension test is deduced from the yield theories for the P/M sintered preforms of the metals. These yield theories are used for the determination of the limit strains in connection with the swift's plastic instability condition for diffuse necking and the Hill's plastic instability condition for localized necking. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：913 / 920

页数：8

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