Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/20753
Title: Empirical analysis of projectile penetration in rock
Authors: United States. Defense Nuclear Agency.
Bernard, Robert S.
Keywords: Empirical method
Penetration tests
Projectiles
Rock masses
Rock mechanics
Publisher: Soils and Pavements Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Miscellaneous Paper
Abstract: Data from 23 penetration tests have been analyzed empirically to produce a nondimensional equation for projectile penetration in rock. The data base consists of normal impact and penetration data for rock (11 tests) and for concrete (12 tests, used as a baseline). The test projectiles had ogive noses, diameters between 76 and 203 mm, masses between 5.9 and 613 kg, and impact velocities from 251 to 809 m/s. The rock penetration equation is given in dimensional form and also in nomograrn form. Calculated results are compared with badly scattered bomb penetration data for granite and sandstone. The equation gives about the same result as a least-squares linear fit to the data.
URI: http://hdl.handle.net/11681/20753
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