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Numerical modeling of dynamic powder compaction using the Kawakita equation of state

Mann, A. P. and Pullin, D. I. and Macrossan, M. N. and Page, N. W. (1991) Numerical modeling of dynamic powder compaction using the Kawakita equation of state. Journal of Applied Physics, 70 (6). pp. 3281-3290. ISSN 0021-8979. http://resolver.caltech.edu/CaltechAUTHORS:MANjap91

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Abstract

Dynamic powder compaction is analyzed using the assumption that the powder behaves, while it is being compacted, like a hydrodynamic fluid in which deviatoric stress and heat conduction effects can be ignored throughout the process. This enables techniques of computational fluid dynamics such the equilibrium flux method to be used as a modeling tool. The equation of state of the powder under compression is assumed to be a modified version of the Kawakita loading curve. Computer simulations using this model are performed for conditions matching as closely as possible with those from experiments by Page and Killen [Powder Metall. 30, 233 (1987)]. The numerical and experimental results are compared and a surprising degree of qualitative agreement is observed.


Item Type:Article
Additional Information:Copyright © 1991 American Institute of Physics. Received 2 January 1991; accepted 18 June 1991. We gratefully acknowledge support provided by the Australian Research Council under Grant No. A487 15757.
Subject Keywords:POWDERS; COMPACTING; HYDRODYNAMICS; EQUATIONS OF STATE; FLUID MECHANICS; COMPUTERIZED SIMULATION; SHOCK WAVES; FLUID FLOW
Record Number:CaltechAUTHORS:MANjap91
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:MANjap91
Alternative URL:http://dx.doi.org/10.1063/1.349262
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2172
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 Mar 2006
Last Modified:26 Dec 2012 08:47

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