| Issue |
MATEC Web Conf.
Volume 408, 2025
44th Conference of the International Deep Drawing Research Group (IDDRG 2025)
|
|
|---|---|---|
| Article Number | 02004 | |
| Number of page(s) | 2 | |
| Section | Technical Notes | |
| DOI | https://doi.org/10.1051/matecconf/202540802004 | |
| Published online | 07 May 2025 | |
Effect of σb and rb identification method from bulge tests on aluminium stamping simulation
Constellium C-TEC,
38341
Voreppe, France
* Corresponding author: dominique.saletti@constellium.com
Anisotropic yield surface description is required to perform numerical simulation of forming processes such as stamping. The BBC2005 criterion, available in AutoForm software, is well adapted for aluminium alloys. This model requires the tuning of 8 parameters including ab and rb, respectively the bulge yield stress and the ratio of strain in the two directions of the sheet plane. Nevertheless, there is not strict consensus on how these values can be identified from bulge test. The different methods that can be found in the literature are reviewed and tested on 8 different aluminium alloys from 5xxx and 6xxx families. Based on numerical simulations of stamping of representative industrial automotive parts, the sensitivity of modelling results to the ab and rb values is shown and the selection of the most appropriate identification method is discussed.
Key words: BBC2005 / Plastic anisotropy / forming simulation / identification from bulge tests
© The Authors, published by EDP Sciences, 2025
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