2013•The Proceedings of the Materials and Mechanics ConferenceOpen access

OS0805 Friction Model for Simulating Equal Channel Angular Extrusion

Vinicius Aguiar de Souza, Ikumu Watanabe, Akira Yanagida

Abstract

The purpose of this study is to improve and extend a method to estimate the friction coefficient in equal channel angular extrusion (ECAE) including cases with back pressure. Employing three dimensional finite element analysis (FEA) and Coulomb friction model with truncated shear stress, the relationship between the friction coefficient and the reaction force is investigated in ECAE with back pressure. Additionally, the deformation state of the billet after ECAE and the pressing load are compared between the experiment and the simulation results with the same friction coefficient for validation of the numerical model.

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Key concepts: Equal channel angular extrusion, Finite element method, Friction coefficient, Materials science, Pressing, Extrusion, Coulomb friction, Mechanics