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http://dx.doi.org/10.3795/KSME-A.2010.34.4.383

Particle Behavior and Deformation During Compaction of Al Powder Using MPFEM  

Lee, Kyung-Hun (Precision Manufacturing Systems Division, Pusan Nat'l Univ.)
Lee, Jung-Min (Korea Institute of Materials Science)
Kim, Byung-Min (School of Mechanical Engineering, Pusan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.34, no.4, 2010 , pp. 383-390 More about this Journal
Abstract
This paper describes multiparticle finite element model (MPFEM)-based powder compaction simulations performed to demonstrate the densification of compacted aluminum powders. A 2D MPFEM was used to explore the densification of a collection of aluminum particles with different average particle sizes under various ram speeds. Individual particles are discretized using a finite element mesh for a detailed description of contact mechanics. Porous aluminum powders with average particle sizes of $20\;{\mu}m$ and $3\;{\mu}m$ were compressed uniaxially at ram speeds of 5, 15, 30, and 60 mm/min by using an MTS servo-hydraulic tester. The slow ram speed was of great advantage to powder densification in low compaction force due to sufficient particle rearrangement. Owing to a decrease in the average particle size of aluminum, the compaction force increased.
Keywords
Cold Compaction; Aluminum Powder; Particle Size; Multi-Particle Finite Element Model;
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1 Martin C. L, Bouvard D, Shima S, 2003, "Study of Particle Rearrangement During Powder Compaction by the Discrete Element Method," J. Mech. Phys. Solids, Vol. 51, No. 4, pp.667-693.   DOI   ScienceOn
2 Redanz P, Fleck N. A, 2001, "The Compaction of a Random Distribution of Metal Cylinders by the Discrete Element Method," Acta Material, Vol. 49, p.4325.   DOI   ScienceOn
3 Adam T. Procopio, Antonios Zavaliangos, 2005, "Simulation of Multi-Axial Compaction of Granular Media from Loose High Relative Densities," J. Mech. Phys. Solids, Vol. 53, pp.1523-1551.   DOI   ScienceOn
4 Lewis R.W, Jinka A.G.K, Gethin D.T, 1993, "Computer-Aided Simulation of Metal Powder Die Compaction Processes," Int. J. Powder Metall., Vol. 25, No. 6, pp. 287-293.
5 Gethin D.T, Tran V.D, Lewis R.W, Ariffin A.K, 1994, "An Investigation of Powder Compaction Processes," Int. J. Powder Metall., Vol. 30, No. 4, pp.385-398.
6 Cundall PA, Strack ODL, 1979, "A Discrete Numerical Model for Granular Assemblies," Geotechnique, Vol. 20, pp.47-65.
7 Cambou, B, 1998, "Behavior of Granular Systems," Springer, CISM Courses and Lectures No. 385.
8 Munjiza A, Owen DRJ, Bicanic N, 1995, "A Combined Finite-Discrete Element Method in Transient Dynamics of Fracturing Solids," Eng. Comput., Vol. 12, pp.145-174.   DOI   ScienceOn
9 Heyliger P.R, McMeeking R.M, 2001, "Cold Plastic Compaction of Powders by a Network Model," J. Mech. Phys. Solids, Vol. 49, No. 9, pp.2031-2054.   DOI   ScienceOn