کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
833528 908146 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prediction of limit strains in sheet metals by using new generalized yield criteria
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Prediction of limit strains in sheet metals by using new generalized yield criteria
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 28, Issue 3, 2007, Pages 913–920
نویسندگان
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