CAPRI - A Two-Dimensional Eulerian Code for Analyzing the Impact of Highly Deformable Projectiles into Rock.
Final rept. 15 Nov 75-30 Sep 76,
SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CALIF
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A new two-dimensional Eulerian code, CAPRI, is described which was specifically developed to treat the response of highly deformable projectiles impacting rock at normal incidence. Major interest in the study centered around projectiles with soft nose caps, and especially on the influence such nose caps might have in possibly cushioning the response of the projectile aft body. The application of the CAPRI code to numerically analyze the response of a magnesium nose capped cylindrical steel projectile striking sandstone is demonstrated and discussed. Detailed numerical results depicting the configuration of the projectile-sandstone system, and contours of stress in the projectile, at various times after impact are given. Also, time histories of acceleration, velocity, displacement and stress at selected material locations are shown. The CAPRI code represents an initial attempt to develop an Eulerian numerical code suitable for numerical analysis of such a class of impact problems. It is suggested, however, that further refinements be made in several features of the numerical scheme before the code is made generally available for projectile design studies. Author
- Ammunition and Explosives