Abstract
The effect of a rubber mold on densification behavior of aluminum alloy powder was investigated under cold isostatic compaction such as cold isostatic pressing (CIP) and rubber isostatic pressing (RIP). The effect of the thickness and strength of a rubber mould and friction between die wall and a rubber mold were studied. The hyperelastic constitutive model based on the Ogden strain energy potential was employed to analyze deformation of rubber. The elastoplastic constitutive model of Shima and Oyane and that of Lee and Kim were implemented into a finite element program (ABAQUS) to simulate densification of metal powder during CIP and RIP. Finite element results were compared with experimental data for densification and deformation of an aluminum alloy powder compact under isostatic compaction.
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