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Issues in connection to the prediction of strain localization in metal sheets

Kjell Mattiasson (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Mats Sigvant ; Mats Larsson
Proceedings of the 11th International Esaform Conference on Material Forming, Lyon, France, April 23-25, 2008 (2008)
[Konferensbidrag, refereegranskat]

The current paper deals with the prediction of strain localization in metal sheets. Especially the effect of strain rate dependency on the necking phenomenon is treated. The ability of FEM to predict strain localization during simulations of sheet forming operations is investigated. An approach for the determination of the strain rate material parameters, based on an experimentally determined FLD0, is suggested. The current approach is demonstrated for three sheet materials, and from the results the approach can be judged as promising.

Nyckelord: Strain rate, Sheet metal, Finite Element simulation, Necking, FLD, Plane strain


Proceedings on CDROM



Denna post skapades 2008-08-19.
CPL Pubid: 73110