Abstract
The accuracy of simulations of the plastic deformation of sheet metal depend to a large extend on
the description of the yield surface, the hardening and the friction. In this paper simulations of deep drawing of
an AlMg alloy with a shell model are presented. The yield surface is described by a Von Mises, a Hill ’48 and a
Vegter yield function. The parameters for the model are based on biaxial experiments. It is concluded that the
shape of the yield locus has a minor influence on the prediction of the punch force–displacement diagram and a
large influence on the prediction of the thickness strains. The Vegter model performs much better than the Hill
’48 model, based on the same R-values.
| Original language | English |
|---|---|
| Title of host publication | The 5th International Conference on Material Forming, 14-17 April 2002, Kraków, Poland |
| Editors | Maciej Pietrzyk, Zbigniew Mitura, Jacek Kaczmar |
| Publisher | Publishing House AKAPIT |
| Pages | 511-514 |
| Number of pages | 4 |
| ISBN (Print) | 83-7108-098-0 |
| Publication status | Published - 14 Apr 2002 |
| Event | ESAFORM 2002: 5th International ESAFORM Conference on Material Forming - Krakow, Poland Duration: 14 Apr 2002 → 17 Apr 2002 Conference number: 5 |
Conference
| Conference | ESAFORM 2002 |
|---|---|
| Abbreviated title | ESAFORM |
| Country/Territory | Poland |
| City | Krakow |
| Period | 14/04/02 → 17/04/02 |
Keywords
- Aluminium
- Vegter model
- Thermo-mechanical
- Finite elements
- Yield locus