Densification behavior of ceramic powder under cold compaction was investigated. Experimental data were obtained for zirconia powder under triaxial compression with various loading conditions. For densification of ceramic powder during cold compaction, a novel hyperbolic cap model was proposed from the iso-density curves based on experimental data of zirconia powder under triaxial compression. The proposed model was implemented into a finite element program (ABAQUS) to study densification behavior of zirconia powder under die compaction. The modified Drucker–Prager/cap model was also employed to compare with experimental data and the finite element results from the proposed model in the present work. By including the effect of friction between the powder and die wall, density distributions of a zirconia compact were measured and compared with finite element results under die compaction. [S0094-4289(00)00102-X]
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