Dwell, Interface Defeat, and Penetration of Long Rods Impacting Silicon Carbide

Test data, analyses, and computed results for gold rods impacting silicon carbide targets are presented. This work focuses on the dwell phenomenon exhibited by silicon carbide, but also investigates the penetration response. Experiments are presented for several target configurations including targe...

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Bibliographic Details
Main Authors: Anderson, Jr , Charles E, Behner, Thilo, Holmquist, Timothy J, Orphal, Dennis L, Wickert, Matthias
Format: Report
Language:English
Subjects:
BALLISTICS
BUFFERS
COMPUTATIONS
COPPER BUFFERS
DWELL
DWELL-PENETRATION TRANSITION VELOCITY
GLASS TARGETS
Inorganic Chemistry
INTERFACE DEFEAT
LONG RODS
Mechanics
NUMERICAL SIMULATIONS
PENETRATION
PENETRATION VELOCITY
POST-DWELL PENETRATION
REVERSE BALLISTIC EXPERIMENTS
RODS
SILICON CARBIDES
SIMULATION
TARGETS
VELOCITY
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Summary:Test data, analyses, and computed results for gold rods impacting silicon carbide targets are presented. This work focuses on the dwell phenomenon exhibited by silicon carbide, but also investigates the penetration response. Experiments are presented for several target configurations including targets that use a small diameter buffer, targets that use a large diameter buffer, and targets that use no buffer. In-depth analyses of the data are presented. A significant finding is the nonlinear penetration velocity that occurs for impact velocities of 800 - 1500 m/s. The results demonstrate the significant effect a buffer has on interface defeat, and demonstrate that silicon carbide can resist extremely large surface stresses (25 GPa) without the use of any confinement or prestress. Computations are also presented that identify the critical design parameters of the buffer including the effect of buffer geometry and buffer separation. Prepared in collaboration with the Fraunhofer Institut fur Kurzzeitdynamik (Ernst-Mach-Institut), Freiburg, Germany, the Southwest Research Institute, Minneapolis, MN, and International Research Associates, Pleasanton, CA.