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- W2556190614 abstract "The dynamic compaction of granular composites is important for the characterization of novel energetic solids. The thermal response of conventional explosives to dynamic loading is typically dominated by regions of highly elevated temperatures called hot spots. The propagation of the compaction wave through a system comprised of either conventional explosives or granular composites results in hot-spot formation near intergranular contact surfaces. This phenomenon precedes the onset of localized ignition. Granular composite materials, consisting of an aluminum core coated with a layer of the high explosive RDX (C3H6N6O6), are currently being investigated as a possible alternative to conventional energetic materials. Aluminum releases a large amount of energy upon combustion; however, pure samples having a large surface area burn very slowly relative to the burning rates of conventional explosives. Due to the small surface area of the aluminum cores, granular composites can potentially enhance combustion by coupling the burning of both components. In addition, thermal conduction to the aluminum core may reduce RDX temperatures, thus desensitizing the material to low-amplitude dynamic loading. Furthermore, an analysis of the resulting stress fields and porosity distribution allows for a characterization of the compaction region, in addition to the speed and structure of the compaction wave itself. Spatially averaged stresses may be used to determine the mean mechanical response at the mesoscale; this numerical data can be used to facilitate the development of bulk models, such as that proposed by Gonthier [1]. Deviations from the mean response may also be used to characterize" @default.
- W2556190614 created "2016-11-30" @default.
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- W2556190614 date "2004-01-01" @default.
- W2556190614 modified "2023-09-24" @default.
- W2556190614 title "ANALYSIS OF DYNAMICALLY COMPACTED RDX-ALUMINUM GRANULAR COMPOSITES" @default.
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