Vol. 1, No. 2, 2006

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ISSN: 1559-3959
Effect of air gaps on the ballistic resistance of ductile shields perforated by nonconical impactors

Gabi Ben-Dor, Anatoly Dubinsky and Tov Elperin

Vol. 1 (2006), No. 2, 279–299
Abstract

In Int. J. Solids Struct. 35:23 (1998), pp. 3097–3103, we proved that localized interaction model (LIM) for shield-impactor interaction implies independence of the ballistic limit velocity (BLV) of spaced shield on air gaps and their widths for conical striker. In this study, the effect of deviation from a conical shape on ballistic properties of spaced shield is investigated using two-term LIM. It is found that this effect is insignificant and it causes small changes (of the order of few percent) in the magnitude of the BLV and energy absorbed by a shield. These theoretical predictions are in agreement with the available experimental results.

Keywords
localized interaction model, ballistic limit velocity, spaced shield, nonconical impactor
Milestones
Received: 15 October 2005
Revised: 6 December 2005
Accepted: 20 December 2004
Published: 1 June 2006
Authors
Gabi Ben-Dor
Department of Mechanical Engineering
Ben-Gurion University of the Negev
POB 653, Beer-Sheva 84105
Israel
Anatoly Dubinsky
Department of Mechanical Engineering
Ben-Gurion University of the Negev
POB 653, Beer-Sheva 84105
Israel
Tov Elperin
Department of Mechanical Engineering
Ben-Gurion University of the Negev
POB 653, Beer-Sheva 84105
Israel