| Issue |
MATEC Web Conf.
Volume 80, 2016
NUMIFORM 2016: The 12th International Conference on Numerical Methods in Industrial Forming Processes
|
|
|---|---|---|
| Article Number | 03002 | |
| Number of page(s) | 5 | |
| Section | MS3: Defects and damage prediction in forming processes | |
| DOI | https://doi.org/10.1051/matecconf/20168003002 | |
| Published online | 24 October 2016 | |
Ductile failure analysis of high strength steel in hot forming based on micromechanical damage model
1 School of Automotive Engineering, Dalian University of Technology, 116024 Dalian Liaoning, China
2 Department of Engineering Mechanics, Dalian University of Technology, 116024 Dalian Liaoning, China
a Corresponding author: pinghu@dlut.edu.cn.cn
The damage evolution of high strength steel at elevated temperature is investigated by using the Gurson-Tvergaard-Needleman (GTN) model. A hybrid method integrated thermal tensile test and numerical technique is employed to identify the damage parameters. The analysis results show that the damage parameters are different at different temperature as the variation of tested material microstructure. Furthermore, the calibrated damage parameters are implemented to simulate a bugling forming at elevated temperature. The experimental results show the availability of GTN damage model in analyzing sheet formability in hot forming.
© The Authors, published by EDP Sciences, 2016
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