Paper Title:

Simulation of Thixoforming: Comparison of Different Constitutive Equations

Periodical Solid State Phenomena (Volumes 116 - 117)
Main Theme Semi-Solid Processing of Alloys and Composites
Edited by C.G. Kang, S.K. Kim and S.Y. Lee
Pages 618-621
DOI 10.4028/www.scientific.net/SSP.116-117.618
Citation Jean Christophe Pierret et al., 2006, Solid State Phenomena, 116-117, 618
Online since October, 2006
Authors Jean Christophe Pierret, Ahmed Rassili, Pierre Cezard
Keywords Finite Element (FE), Modeling, Semi-Solid, Simulation, Thixoforging, Thixoforming
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Abstract

The behaviour of the semi-solid material is complex to simulate and many approaches are proposed in the literature to represent it. In this work, different constitutive equations are studied: the classical Northon-Hoff law, Joly and Merhabian’s one [1] and an innovative micromechanical model using homogenisation technique [2]. These constitutive equations have been implemented in the FE code Forge2® to simulate simple forming tests, such as compression and direct extrusion. The load-displacement curves using the three constitutive equations are compared in order to estimate their capabilities.