Parameters Determination of GTN Model and Damage Analysis of Aluminum Alloy 6016 Sheet Metal
Yu-Mei Hu, Min-Zhi Chen, Yue Xiao, Jin Xiao, Xi Tan, Qi Tang, Ying-E Zhou, Tai-Song Cui
Available Online June 2014.
- https://doi.org/10.2991/icmsa-15.2015.73How to use a DOI?
- GTN Model, Damage, AA6016.
- 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.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
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 - 2015 International Conference on Material Science and Applications (icmsa-15) PB - Atlantis Press SP - 400 EP - 407 SN - 2352-541X UR - https://doi.org/10.2991/icmsa-15.2015.73 DO - https://doi.org/10.2991/icmsa-15.2015.73 ID - Hu2014/06 ER -