Multiscale friction model for hot sheet metal forming

Jenny Venema*, Javad Hazrati, Eisso Atzema, David Matthews, Ton van den Boogaard

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The accurate description of friction is critical in the finite element (FE) simulation of the sheet metal forming process. Usually, friction is oversimplified through the use of a constant Coulomb friction coefficient. In this study, the application of an existing multiscale friction model is extended to the hot stamping process. The model accounts for the effects of tool and sheet metal surface topography as well as the evolution of contact pressure, temperature, and bulk strain during hot stamping. Normal load flattening and strip drawing experiments are performed to calibrate the model. The results show that the model can relatively well predict friction in strip draw experiments when the tool surface evolution due to wear is incorporated. Finally, the application of the formulated multiscale friction model was demonstrated in the FE simulation of a hot-stamped part.

Original languageEnglish
JournalFriction
DOIs
Publication statusE-pub ahead of print/First online - 15 Jun 2021

Keywords

  • friction
  • friction model
  • hot stamping
  • tribology
  • wear

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