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Overview: High Speed Dynamics and Modelling as It Applies to Energetic Solids

Published online by Cambridge University Press:  15 February 2011

J. Covino ,
S. A. Finnegan ,
O. E. R Heimdahl ,
A. J. Lindfors  and
J. K. Pringle
J. Covino
Affiliation:
Research Department, Naval Air Warfare Center Weapons Division, China Lake, CA 93555-6001
S. A. Finnegan
Affiliation:
Research Department, Naval Air Warfare Center Weapons Division, China Lake, CA 93555-6001
O. E. R Heimdahl
Affiliation:
Research Department, Naval Air Warfare Center Weapons Division, China Lake, CA 93555-6001
A. J. Lindfors
Affiliation:
Research Department, Naval Air Warfare Center Weapons Division, China Lake, CA 93555-6001
J. K. Pringle
Affiliation:
Research Department, Naval Air Warfare Center Weapons Division, China Lake, CA 93555-6001
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Abstract

This paper discusses experimental techniques and modelling tools used to characterize energetic solids subjected to dynamic deformation and shock. Critical experiments have been designed to study shock response and impact sensitivity of energetic materials. For example, a simplified two dimensional experiment has been developed to study the critical phenomena involved in delayed detonation reactions (XDT). In addition, wedge tests are used to obtain equation-of-state data. Coupled with hydrocodes, these experiments give us an in-depth understanding of the response of energetic materials subjected to shock loading. A coupled methodology using both experimental and modelling tools is presented. Consisting of three parts, it addresses all possible responses to fragment impact. The three parts are: (1) Fragment impact modelling (hydrocodes and empirically based codes); (2) Experiments to obtain accurate data for predicting prompt detonation; and (3) Tests with planar rocket motor models to explore mechanisms related to bum reaction thresholds and degree of violence. This methodology is currently being used in weapon design and munitions hazard assessments.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 296: Symposium Y – Structure and Properties of Energetic Materials , 1992 , 173
Copyright
Copyright © Materials Research Society 1993

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