Aluminium sheet forming simulations: influence of the yield surface

A.H. van den Boogaard, P.J. Bolt, R.J. Werkhoven, M.H.F.M. van Hout

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

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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 languageEnglish
Title of host publicationThe 5th International Conference on Material Forming, 14-17 April 2002, Kraków, Poland
EditorsMaciej Pietrzyk, Zbigniew Mitura, Jacek Kaczmar
PublisherPublishing House AKAPIT
Pages511-514
Number of pages4
ISBN (Print)83-7108-098-0
Publication statusPublished - 14 Apr 2002
EventESAFORM 2002: 5th International ESAFORM Conference on Material Forming - Krakow, Poland
Duration: 14 Apr 200217 Apr 2002
Conference number: 5

Conference

ConferenceESAFORM 2002
Abbreviated titleESAFORM
CountryPoland
CityKrakow
Period14/04/0217/04/02

Keywords

  • Aluminium
  • Vegter model
  • Thermo-mechanical
  • Finite elements
  • Yield locus

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