Computer-aided simulation to investigate material flow in combined-radial extrusion

Abstract

In this present paper, the combined-radial extrusion process at room temperature is considered. Computer-aided simulations by the rigid-plastic finite element program such as QForm 2D in two different schemes of combinedradial extrusion process, viz, single-ended and double-ended have been used. The die schemes, die geometry parameters, axisymmetric billet dimensions and power mode parameters to investigate forming characteristics such as deformation patterns (gridlines distortion), distributions of effective strain and stress and comparisons of loadstroke curve in these processes by using various relationships have been applied. Based on the simulation results, it isconcluded that the maximum forming load will be occur in single-ended process and the best strain-stress distributions will be appear in double-ended process.