Calculation of the Plastic Metal Flow in the Cold Extrusion Technology by Finite Volume Method

Abstract

This paper presents an application of the finite volume method to ideal plastic metal flow in extrusion technology. Governing equations for the mass and momentum balance are used in an integral form. Solution domains in the cases considered are discretized with a Cartesian numerical mesh with computational points placed at the center of each control volume. After discretization of the governing equations, the resulting system of nonlinear algebraic equations is solved by an iterative procedure, using a segregated algorithm approach. Resulting stress fields are obtained from the Levy-Mises equations. The experimental results and numerical calculations are in good agreement.

Design and Key Process Simulation of a New Type of Pipe Bending Unit

“…where, κ is the coefficient of increase in the bending moment due to friction,  is the coefficient of the bending section, and σb is the tensile strength of materials. At the stage of complete extrusion plastic deformation, the pipe is assumed to be an ideal plastic metal flow [24] according to the principle of constant plastic strain volume, so:…”