Computational modeling of the cold compaction of ceramic powders
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A finite-element model of the cold compaction of ceramic powders by uniaxial pressing is developed and validated by comparison with experimental data. The mechanical behavior of processing powders is assumed according to the modified Drucker-Prager cap model. The frictional effects and the mechanical behavior of tools involved in the process are taken into account. The proposed model allows evaluation of the density distribution into the processed part, as well as stress and strain fields. Variations of the density distribution due to the unloading and the ejection of the part are evaluated
Keywordscold compaction powder metallurgy finite-element method numerical modeling Drucker-Prager cap model
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- 18.L. T. Kuhn and R. M. McMeeking, “Power law creep of powder bonded by isolated contacts,” J. Mech. Phys. Solids, 34, 563–573 (1992).Google Scholar
- 27.F. L. DiMaggio and I. S. Sandler, “Material models for granular soils,” J. Eng. Mech. Divis. ASCE, 935–950 (1971).Google Scholar