Experimental and numerical investigations of beryllium strength models using the Rayleigh-Taylor instability

Autor:	Eric Johnsen, Victor Raevsky, G. F. Gallegos, Olga Ignatova, Jon Belof, M. T. Henry de Frahan, J.N. Florando, Bassem S. El-Dasher, D. S. Ancheta, Robert Cavallo, M. M. LeBlanc, A. Lebedev
Rok vydání:	2015
Předmět:	Physics Optimal design Explosive material Mathematical model General Physics and Astronomy chemistry.chemical_element Strength of materials Poisson's ratio Shock (mechanics) symbols.namesake chemistry symbols Statistical physics Rayleigh–Taylor instability Beryllium
Zdroj:	Journal of Applied Physics. 117:225901
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.4922336
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9ed0e9a0fe6a832a3fbf51476f8e62a1 https://doi.org/10.1063/1.4922336 Zobrazit plný text záznamu