NUMERICAL ANALYSIS OF THE INFLUENCE OF THE FRICTION COEFFICIENT ON STRESS DURING THE EXTRUSION PROCESS OF PERFORATED MATERIAL
Journal Title: Tribologia - Year 2012, Vol 241, Issue 1
Abstract
Numerical analysis of stress, forces, and temperature during axisymmetrical cold extrusion of an aluminium alloy specimen was presented using Deform 3D. The rigid-plastic model was applied. The influence of a friction coefficient on effective and contact stresses in perforated specimens with various holes located on the symmetry axis were analysed. Forces of the extrusion acting on the extrusion ram were analysed considering the influence of various friction coefficient values. Temperatures during extrusion processes with and without friction were compared. For exact analysis of the problem results of the extrusion, perforated specimens were compared with the results of the extrusion of non-perforated specimens.
Authors and Affiliations
Jerzy Piwnik, Maciej Leszczyński
Keywords
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