Advanced friction modeling for sheet metal forming

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

Research output: Contribution to journalArticleAcademicpeer-review

61 Citations (Scopus)

Abstract

The Coulomb friction model is frequently used for sheet metal forming simulations. This model incorporates a constant coefficient of friction and does not take the influence of important parameters such as contact pressure or deformation of the sheet material into account. This article presents a more advanced friction model for large-scale forming simulations based on the surface changes on the micro-scale. When two surfaces are in contact, the surface texture of a material changes due to the combination of normal loading and stretching. Consequently, shear stresses between contacting surfaces, caused by the adhesion and ploughing effect between contacting asperities, will change when the surface texture changes. A friction model 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. This friction model has been implemented in a finite element code and applied to a full-scale sheet metal forming simulation. Results showed a realistic distribution of the coefficient of friction depending on the local process conditions
Original languageEnglish
Pages (from-to)66-78
JournalWear
Volume286-287
DOIs
Publication statusPublished - 2012

Keywords

  • IR-84132
  • METIS-293925

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