Title: Friction model selection in FEM simulations of aluminium extrusion

Authors: L. Donati, L. Tomesani, M. Schikorra, N. Ben Khalifa, A.E. Tekkaya

Addresses: Department of Mechanical Construction Engineering (DIEM), University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy. ' Department of Mechanical Construction Engineering (DIEM), University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy. ' Institute of Forming Technology and Lightweight Construction, TU Dortmund, Baroper Str. 301, 44227 Dortmund, Germany. ' Institute of Forming Technology and Lightweight Construction, TU Dortmund, Baroper Str. 301, 44227 Dortmund, Germany. ' Institute of Forming Technology and Lightweight Construction, TU Dortmund, Baroper Str. 301, 44227 Dortmund, Germany

Abstract: Visioplastic analyses with the rod technique were performed in the extrusion of AA6060 alloy at different processing conditions in order to measure the friction effect at the billet-container interface. During the trials an accurate monitoring of the relevant process variables such as punch force and temperatures was performed in order to validate FEM simulations. Different FE codes were used to carry out the simulations: Deform, HyperXtrude, and Superform. A particular attention was given on evaluating the several coefficients of the available friction models by comparing the FEM results with experimental results.

Keywords: aluminium extrusion; friction models; visioplastic analysis; AA6060; FEM; finite element method; simulation; modelling; aluminium alloys; billet-container interface; punch force; temperature.

DOI: 10.1504/IJSURFSE.2010.029627

International Journal of Surface Science and Engineering, 2010 Vol.4 No.1, pp.27 - 41

Published online: 30 Nov 2009 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article