Multiscale friction modeling for sheet metal forming

J. Hol, M.V. Cid Alfaro, Matthias B. de Rooij, Vincent T. Meinders

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Abstract

The most often used friction model for sheet metal forming simulations is the relative simple Coulomb friction model. This paper presents a more advanced friction model for large scale forming simulations based on the surface change on the micro-scale. The surface texture of a material changes when two surfaces are in contact under a normal load. This is caused by flattening due to combined normal loading and stretching. The consequence of this is that shear stresses between the contacting surfaces, developed by adhesion and ploughing effects between contacting asperities, will change when the surface texture changes. A numerical procedure has been developed which accounts for the change of the surface texture on the micro-scale and its influence on the friction behavior on the macro-scale. The numerical procedure is implemented in a finite element code and applied to a full scale sheet metal forming simulation.
Original languageEnglish
Title of host publicationTribology of Manufacturing Processes
EditorsEric Felder, Pierre Montmitonnet
Place of PublicationParis
PublisherTransvalor - Presses des MINES
Pages573-582
ISBN (Print)9782911256288
Publication statusPublished - 13 Jun 2010
Event4th International Conference on Tribology in Manufacturing Processes, ICTMP 2010 - Nice, France
Duration: 13 Jun 201015 Jun 2010
Conference number: 4

Publication series

NameSheet Metal Forming
PublisherTransvalor - Presses des MINES
Volume2

Conference

Conference4th International Conference on Tribology in Manufacturing Processes, ICTMP 2010
Abbreviated titleICTMP
CountryFrance
CityNice
Period13/06/1015/06/10

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Keywords

  • Friction mechanisms
  • flattening
  • ploughing
  • asperity contact
  • IR-74241
  • Adhesion
  • real contact area
  • METIS-269183

Cite this

Hol, J., Cid Alfaro, M. V., de Rooij, M. B., & Meinders, V. T. (2010). Multiscale friction modeling for sheet metal forming. In E. Felder, & P. Montmitonnet (Eds.), Tribology of Manufacturing Processes (pp. 573-582). (Sheet Metal Forming; Vol. 2). Paris: Transvalor - Presses des MINES.