This article is cited in 6 papers

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Penetration of long strikers under hydrodynamic conditions with allowance for the material compressibility

S. V. Fedorov, Ya. M. Bayanova

Bauman Moscow State Technical University

Abstract: The influence of compressibility on the fast penetration of long metallic strikers into different barriers at interaction speeds of up to 10 km/s is investigated. The investigation is based on the hydrodynamic theory of penetration. Compressibility-related corrections to Lavrent’ev’s rate and depth of penetration, which were obtained in terms of the concept representing the penetration process as collisions of ideal incompressible liquid jets, are estimated. The variation of these corrections with the interaction speed under subsonic and supersonic conditions is analyzed. If the compressibilities of the striker and barrier materials differ radically, the penetration depth disagrees with that predicted by the hydrodynamic theory (assuming the incompressibility of the materials) by 10–15%.

Received: 08.11.2010

 English version: Technical Physics, 2011, 56:9, 1266–1271

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