Cinnamon J.D. Hypervelocity Gouging Impacts

American Institute of Aeronautics and Astronautics, 2009. — 233 p. — (Progress in Astronautics and Aeronautics. Vol. 228).When materials interact at hypervelocity (on the order of Mach 8.5 and above) unexpected results can occur. This book addresses the effects of hypervelocity impact, summarizing past and present research efforts as well as setting out the theoretical foundation for understanding material interactions at such velocity. It focuses on research conducted at the Holloman Air Force Base High Speed Test Track (HHSTT), which is working toward a test vehicle speed above Mach
10. Researchers have found that as the sled's speed has increased to Mach 8.5, a material interaction has developed that causes "gouging" in the rails and the sled's "shoes", which can lead to catastrophic failure. The author evaluates the HHSTT gouging phenomenon and offers recommendations to mitigate the occurrence of hypervelocity gouging. His insights and recommendations will also find wide applicability in other areas, such as railguns, orbital debris, and weapon designHypervelocity Gouging Problem Overview
Previous Research in the Hypervelocity Gouging Phenomenon
Theoretical Background
Characterization of Gouging
Constitutive Model Development
Validation of Constitutive Models for Midrange Strain Rates
Scaled Laboratory Hypervelocity Gouging Test
Validation of Constitutive Models for High Strain Rates in Hypervelocity Impact
Simulation of HHSTT Hypervelocity Gouging Scenario
Sample Scaled Hypervelocity Impact CTH Input File
Sample Sled Simulation CTH Input File
Supporting Materials