کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1563772 999620 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The GTN damage model based on Hill’48 anisotropic yield criterion and its application in sheet metal forming
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
The GTN damage model based on Hill’48 anisotropic yield criterion and its application in sheet metal forming
چکیده انگلیسی

To predict the damage evolution of anisotropic plastic voided ductile materials, Gurson–Tvergaard–Needleman (GTN) yield criterion is developed based on Hill’s quadratic anisotropic yield criterion (1948) and isotropic hardening rule for matrix material. A user-defined subroutine is developed using the above model. An implicit stress integration procedure is modified to adapt the explicit dynamic solver. After performing a series of single element tests, cylindrical tension and thick plate tension are analyzed. Then a benchmark of NUMISHEET’2002, i.e. deep drawing of cylindrical cup, is taken as an example of sheet metal forming. Comparisons are made among the von Mises constitutive model, isotropic and anisotropic plastic GTN damage models. It is found that plastic anisotropy of the matrix in ductile sheet metal has influence on both deformation behavior and damage evolution of the material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 44, Issue 3, January 2009, Pages 1013–1021
نویسندگان
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