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 March 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 design.
Author(s): J. Cinnamon
Series: Progress in Astronautics and Aeronautics
Publisher: AIAA
Year: 2009
Language: English
Pages: 233
Tags: Механика;Механика деформируемого твердого тела;
Title......Page 1
Copyright......Page 4
Table of Contents......Page 9
Preface......Page 13
Acknowledgments......Page 15
Nomenclature......Page 17
Abbreviations and Acronyms......Page 21
Hypervelocity Gouging Problem Overview
......Page 23
Previous Research in the Hypervelocity Gouging Phenomenon
......Page 29
Theoretical Background
......Page 61
Characterization of Gouging
......Page 73
Constitutive Model Development
......Page 99
Validation of Constitutive Models for Midrange Strain Rates
......Page 123
Scaled Laboratory Hypervelocity Gouging Test
......Page 153
Validation of Constitutive Models for High Strain Rates in Hypervelocity Impact
......Page 183
Simulation of HHSTT Hypervelocity Gouging Scenario
......Page 199
Conclusions
......Page 231
Sample Scaled Hypervelocity Impact CTH Input File
......Page 239
Sample Sled Simulation CTH Input File
......Page 245
Index......Page 251
Supporting Materials......Page 255