2006•Defense Technical Information Center (DTIC)Requires access
A Study of Ammunition Response to the Interior Ballistics Environment of Gun Launch
S. E. Ray, Michael J. Nusca, Albert W. Horst
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Abstract
A multidisciplinary modeling approach is used to study the dynamic response of a notional telescoped ammunition projectile to gun chamber pressure dynamics generated by a densely packed solid propellant charge during gun launch. Since material stress imposed on the ammunition could potentially damage the projectile or its payload, a detailed knowledge of the peak stress is essential in the ammunition design process. The modeling approach begins with the Army's interior ballistics code ARL-NGEN3 predicting ignition, flamespreading and combustion of the solid propellant charge. Following this, the structural mechanics code EPIC simulates the response of the projectile to the pressure dynamics computed by the ARL-NGEN3 code. The results are analyzed in order to develop a comprehensive understanding of the in-bore behavior of the projectile.