Journal
COMPUTATIONAL MATERIALS SCIENCE
Volume 44, Issue 3, Pages 1013-1021Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.commatsci.2008.07.020
Keywords
Porous material; Ductile damage; Anisotropy; Sheet forming; Finite element method
Categories
Funding
- National Natural Science Foundation of China [50575143]
Ask authors/readers for more resources
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. (c) 2008 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available