A Model for Shock Initiation of Porous Explosives by Ramp Induced Compression Processes PDF Download
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Author: Christopher Andrew Cudak
Publisher:
ISBN:
Category :
Languages : en
Pages : 258
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Author: Christopher Andrew Cudak
Publisher:
ISBN:
Category :
Languages : en
Pages : 258
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Author: Lee Davison
Publisher: Springer Science & Business Media
ISBN: 1461222923
Category : Science
Languages : en
Pages : 351
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Book Description
While much is known about the effects of shock compression on monolithic materials, the unusual physical and chemical processes that take place when a porous medium is shocked have hardly been studied until now. Here, leading researchers in condensed matter physics, physical chemistry, metallurgy, mechanics, and materials science bridge this gap. The focus is on heterogeneous deformation mechanisms, nonequilibrium thermodynamics, and chemical processes, covering such topics as modelling the complex interplay of thermal, mechanical, and chemical processes; experimental data on pore collapse and their interpretation; and synthesis of new materials through shock-induced chemical reactions. By presenting not only the most recent results, but also the open questions that remain, these essays convey the excitement of developing a scientific basis for understanding shock compression.
Author:
Publisher:
ISBN:
Category : Detonation
Languages : en
Pages : 830
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Author: James Richard Stewart
Publisher:
ISBN:
Category :
Languages : en
Pages : 280
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Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 756
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 19
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A continuum based reactive burn model for shocked loaded high explosives has been developed that uses heterogeneous distribution of pore collapse energy to one or more of the constituents (a hot spot) as an ignition source, represents constituents with independent equations of state and has multiple competing and sequential chemical reactions. Reaction propagates from the hot spot to the remainder of the material through either a pressure or temperature dependence of heat transfer through a film layer. The reaction may be quenched by heat transfer or shock release if it is not rapid enough.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Philip M. Howe
Publisher:
ISBN:
Category :
Languages : en
Pages : 25
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A model of the shock initiation of heterogeneous explosives is presented. The model is based upon a 'hotspot' ignition mechanism. Choice of the energy density as the independent variable in the problem permits separation of Hugoniot effects from the buildup process, and leads to a critical condition for initiation which is independent of the loading density. The model is found to be consistent with data from the literature on porous tetryl. (Author).
Author: Daniel W. Coyne
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
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When a high energy solid propellant or explosive becomes porous, either by design or by accidental damage, it becomes more sensitive to shock-to-detonation transition (SDT). Stress waves propagating ahead of the convective flame front cause pore collapse which creates a confined bulk reaction zone. With sufficient pressurization in the reaction zone, the stress waves coalesce to form a shock. This paper describes an attempt to model the shock formation in porous solids by coupling the -gas pressurization to the solid mechanics of pore collapse and shock formation. Concepts are presented which indicate why porous materials are more sensitive to shock initiation than solids; mainly it is due to a greater bulk energy and formation of localized hot spots. (Author).
Author: International Telecommunication Union International Radio Consultative Committee
Publisher:
ISBN:
Category :
Languages : en
Pages : 317
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