Hypervelocity impact tests and simulations of single whipple bumper shield concepts at 10km/s
| Autor: | Lalit C. Chhabildas, Scott A. Hill, Eugene S. Hertel |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Materials science
Projectile Mechanical Engineering Perforation (oil well) Aerospace Engineering Ocean Engineering Mechanics Debris Mechanics of Materials Shield Automotive Engineering Hypervelocity Substructure Composite material Safety Risk Reliability and Quality Axial symmetry Civil and Structural Engineering Space debris |
| Zdroj: | International Journal of Impact Engineering. 14:133-144 |
| ISSN: | 0734-743X |
| DOI: | 10.1016/0734-743x(93)90015-y |
| Popis: | A series of experiments has been performed to evaluate the effectiveness of a Whipple bumper shield to orbital space debris at impact velocities of ∼ 10 km/s. Upon impact by a 19 mm (0.87 mm thick, L/D ∼0.5) flier plate, the thin aluminum bumper shield disintegrates into a debris cloud. The debris cloud front propagates axially at velocities of ∼14 km/s and expands radially at a velocity of ∼7 km/s. Subsequent loading by the debris on a 3.2 mm thick aluminum substructure placed 114 mm from the bumper penetrates the substructure completely. However, when the diameter of the flier plate is reduced to 12.7 mm, the substructure, although damaged is not perforated. Numerical simulations performed using the multi-dimensional hydrodynamics code CTH also predict complete perforation of the substructure by the subsequent debris cloud for the larger flier plate. The numerical simulation for a 12.7 mm flier plate, however, shows a strong dependence on assumed impact geometry, i. e., a spherical projectile impact geometry does not result in perforation of the substructure by the debris cloud, while the flat plate impact geometry results in perforation. |
| Databáze: | OpenAIRE |
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