Parametric Sensitivity Comparison of Simulation Models for Flyer Plate Impact Experiments
- University of Nevada, Las Vegas
- National Security Technologies, LLC. (NSTec), Mercury, NV (United States)
This paper compares the sensitivities of different modeling approaches for fundamental flyer plate impact experiments to variations of several input parameters. Two modeling approaches are used to model a copper flyer plate experiment: the CTH hydrodynamic code and the LS-DYNA code using the smoothed particle hydrodynamic (SPH) approach. Simulations using these two methods are compared to experimental data from a gas gun experiment in which a copper flyer plate impacted a copper target plate. The experiment was designed to cause spall in the target. Numerical simulations are conducted using typical input physics models including the Mie-Grüneisen equation of state, the Johnson-Cook compressive strength model, and a pressure cutoff (Pmin) model for tensile damage (spall). Effects of artificial viscosity, spall strength, and computational cell size are studied and discussed with the objective of improving the accuracy of these simulations.
- Research Organization:
- Nevada Test Site (NTS), Mercury, NV (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
- DOE Contract Number:
- DE-AC52-06NA25946
- OSTI ID:
- 1243094
- Report Number(s):
- DOE/NV/25946-2271
- Journal Information:
- International Journal of Computational Methods and Experimental Measurements Journal, Vol. 3, Issue 4; Conference: 13th International Conference on Structures Under Shock and Impact (SUSI) Wessex Institute, New Forest, United Kingdom June 3 - 5, 2014 http://www.wessex.ac.uk/conferences/2014/susi-2014
- Country of Publication:
- United States
- Language:
- English
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