Abstract

An experimental study has been carried out to establish quantitative relationships between the deflection of thin plates in inertial forming and the relevant process parameters. The conditions for similarity have been determined for this operation and results of model experiments involving large plastic deformation of whole circular and annular lead diaphragms agree well with theoretical predictions. A machine capable of delivering a uniform initial velocity of up to 55 m/s has been used to obtain the experimental data. The test equipment is briefly described and results are presented showing deformed specimens, profiles, hoop and thickness strain distributions, deflections, level of strain rate, scaled energy requirements etc.

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