The influence of the size of shaped charges on the penetration and perforation behavior oflow-density brittle walls is investigated in this work. An incremental computation procedurefor wall penetration was proposed earlier in combination with the Fireman-Pugh techniqueto provide a rapid answer for the use in fast running engineering tools. Shaped charges withthree different diameters have been studied experimentally and compared with thecomputed results.Size-independent penetration and perforation of targets can be determined, provided that thecharges are dimensionally proportional and the materials used have identical properties.However the three charges which are considered in this investigation show somedifferences, in particular concerning the liner geometry and the presence of a wave shaper.Therefore additional parameters are needed to describe the jet characteristics. The jet tipvelocity, the velocity difference between the jet elements after breakup and a specificbreakup criterion provide a good description of the stretching jet to perform modeling ofcharges with different sizes and different designs. If wall perforation and residualpenetration performance are investigated, a separate RHA- penetration-depth curve needs tobe established experimentally for each charge type.
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