Plate perforation by eroding rod projectiles
| Autor: | D.J. Gee |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Materials science
Computer simulation Projectile business.industry Mechanical Engineering Perforation (oil well) Aerospace Engineering Ocean Engineering Aerodynamics Penetration (firestop) Mechanics Structural engineering Mechanics of Materials Automotive Engineering Hypervelocity Pitch angle Safety Risk Reliability and Quality business Civil and Structural Engineering Test data |
| Zdroj: | International Journal of Impact Engineering. 28:377-390 |
| ISSN: | 0734-743X |
| Popis: | The penetration and perforation of stationary, oblique steel plates by hypervelocity tungsten-alloy projectilesisexamined here. Simulationshave been performed for L=D 10 projectilesagainst one- and twoplate target configurations. The plate thickness-to-rod diameter ratio t=D varied slightly, as did the plate spacing-to-plate thickness ratio tgap/t. For all simulations, t=DA½1:2; 1:6� and tgap=tA½0:7; 1� : Normalized line-of-sight perforation is one measure of performance, and archival test data are compared on this basis. The results presented reflect pre-impact aerodynamic pitch and yaw in the test data, but only pitch angle deviation in the numerical data. Simulation and test data are reasonably well correlated and the data suggest that a favorable pitch angle exists and may be related to impact geometry. By way of the numerical simulation, differences in perforation efficiency for one- and two-plate targets are noted and erosion mechanisms are explored. It is shown that projectile erosion between target plates depends, to an extent, upon plate spacing. Additionally, the data suggests that behind-plate residual erosion varies with the number of plates, decreasing as the number of plates increases. r 2002 Elsevier Science Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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