On the hydrodynamic theory of long-rod penetration

The hydrodynamic theory of long-rod penetration is reexamined by applying the modified Bernoulli equation to the forces acting on both sides of the moving rod-target interface. Using a ratio of 2 for the effective cross sectional areas of the mushroomed and rigid parts of the rod, it is shown that a...

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Bibliographic Details
Published inInternational journal of impact engineering Vol. 10; no. 1; pp. 483 - 486
Main Authors Rosenberg, Z., Marmor, E., Mayseless, M.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 1990
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Summary:The hydrodynamic theory of long-rod penetration is reexamined by applying the modified Bernoulli equation to the forces acting on both sides of the moving rod-target interface. Using a ratio of 2 for the effective cross sectional areas of the mushroomed and rigid parts of the rod, it is shown that analytical expressions can be used to calculate the resistance to target penetration. The analytical expression used to calculate this resistance is the cylindrical cavity expansion, which yields resistance values of 3–4 times the compressive yield strength of the target material. Calculations based on our model show good agreement with experimental data, for steel and tungsten long rods penetrating various steel targets.
ISSN:0734-743X
1879-3509
DOI:10.1016/0734-743X(90)90081-6