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1 2001

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Non-constant coefficient friction models in 3d simulation of drawing processes

Rońda J., Colville K. W., Mahrenholtz O.

Computer Assisted Mechanics and Engineering Sciences

2001

Vol. 8, No. 4

609-628

Different friction models: the classic one proposed by Amontons-Coulomb (AC) with a constant friction coefficient, a three-parameter model proposed by Wriggers et al. [1], and a model based on the concept of `work-hardening' proposed by de Souza Neto et al. [2], are applied to the 3-D square-cup drawing and S-rail stamping FE simulations. The benchmark problems used during NUMISHEET'93 for a cup drawing and NUMISHEET'96 for S-rail stamping were simulated here. The results obtained for these three models are presented to illustrate the influence of the friction model on the drawing process. [1] P. Wriggers, T. vu Van, E. Stein. Finite element formulation of large deformation impact-contact problems with friction. Computers and Structures, 37: 319-331, 1990. [2] E.A. de Souza Neto, K. Hashimoto, D. Peric, D.R.J. Owen. A phenomenological model for frictional contact accounting for wear effects. Phil. Trans. R. Soc. London, A354: 819-843, 1996.