Shock-induced explosive chemistry in a deterministic sample configuration.

Stuecker, John Nicholas ; Castaneda, Jaime N. ; Cesarano, Joseph, III ; Trott, Wayne Merle ; Baer, Melvin R. ; Tappan, Alexander Smith

Sandia National Laboratories

关键词: Impact Shock;    Detonation Waves;    45 Military Technology, Weaponry, And National Defense;    Chemical Explosives;    Shock Tests.;   

DOI  :  10.2172/875610
RP-ID  :  SAND2005-6758
RP-ID  :  AC04-94AL85000
RP-ID  :  875610

美国|英语

来源: UNT Digital Library

【 摘 要 】

Explosive initiation and energy release have been studied in two sample geometries designed to minimize stochastic behavior in shock-loading experiments. These sample concepts include a design with explosive material occupying the hole locations of a close-packed bed of inert spheres and a design that utilizes infiltration of a liquid explosive into a well-defined inert matrix. Wave profiles transmitted by these samples in gas-gun impact experiments have been characterized by both velocity interferometry diagnostics and three-dimensional numerical simulations. Highly organized wave structures associated with the characteristic length scales of the deterministic samples have been observed. Initiation and reaction growth in an inert matrix filled with sensitized nitromethane (a homogeneous explosive material) result in wave profiles similar to those observed with heterogeneous explosives. Comparison of experimental and numerical results indicates that energetic material studies in deterministic sample geometries can provide an important new tool for validation of models of energy release in numerical simulations of explosive initiation and performance.