Open AccessApplication of a Dung’s Model to Predict Ductile Fracture of Aluminum Alloy Sheets Subjected to Deep Drawing
Author(s) -
Hao Nguyen-Huu,
Trung Ngoc Nguyen,
Hoa Vu Cong
Publication year - 2015
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v18i2.1070
Subject(s) - materials science , von mises yield criterion , isotropy , anisotropy , alloy , deep drawing , nucleation , aluminium , hardening (computing) , finite element method , yield (engineering) , void (composites) , composite material , metallurgy , structural engineering , engineering , thermodynamics , physics , layer (electronics) , quantum mechanics
In this paper, prediction of failed evolution of anisotropic voided ductile materials will be developed based on Dung’s microscopic damage model. An isotropic and anisotropic formulation of the Dung’s damage model that using von Mises yield criterion and Hill’s quadratic anisotropic yield criterion (1948) integrated with isotropic hardening rules of matrix material used to simulate the deep drawing process of aluminum alloy sheets. The model is implemented as a vectorized user-defined material subroutine (VUMAT) in the ABAQUS/Explicit commercial finite element code. The predictions of ductile crack behavior in the specimens based on void nucleation, growth and coelescence are compared with Gurson – Tvergaard – Needleman (GTN) model and experiment results from reference.