Evaluation of Empirical and Analytical Procedures Used for Predicting the Rigid Body Motion of an Earth Penetrator.
Abstract
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 ft/sec. 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1975
- Accession Number
- ADA012143
Entities
People
- Paul F. Hadala