Journal
NUCLEAR ENGINEERING AND DESIGN
Volume 238, Issue 10, Pages 2521-2528Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.nucengdes.2008.04.006
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This paper investigates the empirical formulae used in engineering practice to predict the critical perforation energy of metallic plates struck by rigid projectiles in the sub-ordnance regime. Main factors affecting the critical perforation energy are identified and valid conditions for each empirical formula are compared. Dimensional analysis is conducted to show the dependence of the non-dimensional critical impact energy on other influential non-dimensional numbers. Available empirical formulae are re-expressed in non-dimensional forms. A modified Jowett/AEA equation is proposed to predict the critical perforation energy of a flat-ended short projectile. The present work increases the confidence of using these empirical formulae and can be regarded as a quick guide for ballistic protection design of metallic shields and steel armour plates. (C) 2008 Elsevier B.V. All rights reserved.
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