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

Jacek Rańda; Kevin W. Colville; Oskar Mahrenholtz

Jacek Rańda University of Cape Town
Kevin W. Colville University of Cape Town
Oskar Mahrenholtz Technische Universität Hamburg-Harburg

Abstract

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. [9], and a model based on the concept of 'work-hardening' proposed by de Souza Neto et al. [8], 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.

Keywords

References

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