Evaluation of Empirical and Analytical Procedures Used for Predicting the Rigid Body Motion of an Earth Penetrator.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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This report presents a comparison of five pretest predictions with the measured rigid body motion of a large penetrator normally impacting the Watching Hill Blast Range at the Defence Research Establishment, Suffield, Ralston, Alberta, Canada, at an impact velocity of about 500 ftsec. The prediction methods used were evaluated in detail. They included the Sandia empirical penetration formulas, the spherical and cylindrical cavity expansion theories, a viscoplastic force law, and the AVCO differential area force law. The capability of predicting peak rigid body deceleration and maximum penetration within a factor of two of measured test data was demonstrated by several of the methods.
- Soil Mechanics
- Civil Engineering