Computational simulations of experimental impact data obtained at 7 to 11 km/s with aluminum and zinc
- Southwest Research Institute, San Antonio, Texas 78228 (United States)
- Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
A combined experimental/computational program was conducted to asses the physical characteristics of impacts at speeds above those attainable using conventional light-gas guns, but within the realm of impact encounters in space, where velocities can range from 7 to 15 km/s. A major goal of the program was to assess the capability of state-of-the-art hydrocodes to reproduce damage and loading characteristics seen in hypervelocity impacts that produce diffuse molten or vaporous debris clouds. In this study the Eulerian hydrocode CTH was used. Comparisons have been made to experiments conducted with aluminium projectiles traveling from 7.4 to 11.4 km/s. A three-stage light-gas gun launcher was used to launch 17[times]1 mm aluminum disks, and an inhibited shaped charge launcher was used to launch 20[times]5 mm aluminum rods. Additional experiments were conducted at velocites from 3.5 to 6.6 km/s using zinc. In that range, scale modeling analysis predicts that a response similar to aluminum impacting at roughly twice the velocity should be attained. Comparisons between observed experiment results and computational simulations are highlighted. [copyright]American Institute of Physics
- OSTI ID:
- 7019484
- Report Number(s):
- CONF-921145-; CODEN: APCPCS
- Journal Information:
- AIP Conference Proceedings (American Institute of Physics); (United States), Vol. 309:1; Conference: Production and neutralization of negative ions and beams, Upton, NY (United States), 9-13 Nov 1992; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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