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Title: Numerical analyses of penetration dynamics in support of investigations of scaling relations for earth penetrators
Authors: California Research and Technology, Inc.
Wagner, Mark H.
Fulton, Christopher C.
Keywords: Earth penetrators
Finite difference method
Finite element method
Projectile penetration
Numerical analysis
Mathematical analysis
Soil penetration
Computer programs
Publisher: Soils and Pavements Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Miscellaneous Paper
Abstract: Two finite-difference WAVE-L code solutions of projectile penetration have been conducted to assess the effect of projectile sectional pressure (W/A) on penetration dynamics. The results are being used in an investigation of penetration scaling relations underway at the Waterways Experiment Station. The penetrator problems consisted of the normal impacts of rigid-body projectiles into sand targets at a velocity of 200 ft/sec. The projectiles were 6 in. in diameter with a 6-in. long, ogive nose (CRH = 1.25). Two penetrator weights were selected, 141.4 lb (Case 1) and 424.1 lb (Case 2), to give projectile sectional pressures of 5 psi for Case 1 and 15 psi for Case 2. Detailed results of the numerical solutions, including time histories of the penetration dynamics variables, force loading distributions, and field plots of the target response, are presented in the report.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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