Abstract
AbstractTorre’s model of a hollow sphere subjected to external pressure, developed to represent the compaction behaviour of a porous body, has been modified to cover strain-hardening of the material. Numerical results from this model show that as the strain-hardening capacity of the material is increased, the slope of the In(1/1-D) vs. pressure plots decreases, while the linearity increases. No significant curvature is observed at high pressures.Experimental results of density for Atomet 28 iron powder are compared with theoretical predictions. There is good agreement for compacting pressures between 300 and 1000 N/mm2; outside this range the experimental results are lower than the theoretical values. Some possible reasons for the discrepancy are discussed.
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