Parameters Determination of GTN Model and Damage Analysis of Aluminum Alloy 6016 Sheet Metal

DOI

10.2991/icmsa-15.2015.73How to use a DOI?

Keywords

GTN Model, Damage, AA6016.

Abstract

Taking the material of AA6016 (Aluminum Alloy 6016) which is widely used in automobiles as the object of this study, the mechanical properties based on GTN (Gurson-Tvergaard-Needleman) model had been investigated. The parameters of the GTN model which were used for simulation were identified by uni-axial tensile test, parameter fitting and the inverse finite element method. Then, the simulation of the uni-axial tensile test was done by developing subroutine of UMAT (User-Defined Material) based on LS-DYNA. The results show that the damage and fracture of AA6016 have good agreements with the experiment. Further, the influences of different damage parameters f_0 and f_n on the mechanical properties were investigated, which verifies the rationality of the GTN parameters. It is of interest that in the results of both simulation and experiment, the direction of fracture on the plate tensile specimen is 60°, instead of the 45°or 90° obtained in previous literatures.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yu-Mei Hu
AU  - Min-Zhi Chen
AU  - Yue Xiao
AU  - Jin Xiao
AU  - Xi Tan
AU  - Qi Tang
AU  - Ying-E Zhou
AU  - Tai-Song Cui
PY  - 2014/06
DA  - 2014/06
TI  - Parameters Determination of GTN Model and Damage Analysis of Aluminum Alloy 6016 Sheet Metal
BT  - Proceedings of the 2015 International Conference on Material Science and Applications
PB  - Atlantis Press
SP  - 400
EP  - 407
SN  - 2352-541X
UR  - https://doi.org/10.2991/icmsa-15.2015.73
DO  - 10.2991/icmsa-15.2015.73
ID  - Hu2014/06
ER  -