Experimental and numerical investigations of beryllium strength models using the Rayleigh-Taylor instability
- Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109 (United States)
- Lawrence Livermore National Laboratory Livermore, California 94551-0808 (United States)
- Russian Federal Nuclear Center-VNIIEF, Sarov 607188 (Russian Federation)
We present a set of high explosive driven Rayleigh-Taylor strength experiments for beryllium to produce data to distinguish predictions by various strength models. Design simulations using existing strength model parameterizations from Steinberg-Lund and Preston-Tonks-Wallace (PTW) suggested an optimal design that would delineate between not just different strength models, but different parameters sets of the PTW model. Application of the models to the post-shot results, however, suggests growth consistent with little material strength. We focus mostly on efforts to simulate the data using published strength models as well as the more recent RING relaxation model developed at VNIIEF. The results of the strength experiments indicate weak influence of strength in mitigating the growth with the RING model coming closest to predicting the material behavior. Finally, we present shock and ramp-loading recovery experiments.
- OSTI ID:
- 22412940
- Journal Information:
- Journal of Applied Physics, Vol. 117, Issue 22; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aluminum Rayleigh Taylor Strength Measurements and Calculations
Application of a Multiscale Model of Tantalum Deformation at Megabar Pressures