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Journal of Applied Mathematics
Volume 2015 (2015), Article ID 283843, 7 pages
http://dx.doi.org/10.1155/2015/283843
Research Article

Finite Element Simulation of the Compaction and Springback of Alumix 321 PM Alloy

Department of Mechanical Engineering, Dalhousie University, 1360 Barrington Street, P.O. Box 15000, Halifax, NS, Canada B3H 4R2

Received 29 April 2015; Revised 3 July 2015; Accepted 15 July 2015

Academic Editor: Sutasn Thipprakmas

Copyright © 2015 Stanley G. Selig and Darrel A. Doman. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A finite element simulation of the compaction and springback of an aluminum-based powder metallurgy alloy (Alumix 321) was developed and validated using the LS-DYNA hydrocode. The present work aims to directly address the current scarcity of modeling works on this popular alloy system. The Alumix 321 constitutive material parameters are presented. The model can predict the results of single-action compaction as well as the amount of springback experienced by a compact upon ejection from the die. The model has been validated using a series of experiments including powder compaction, optical densitometry, and the creation of a compaction curve.