Isentropic compressions experiments for mesoscale studies of energetic composites.

Conference · Fri Jul 01 04:00:00 EDT 2005

OSTI ID:967800

Gustavsen, Rick L ^[1]; Sheffield, Steve A ^[1]; Baer, Melvin R; Hall, Charles Ainsley; Hooks, D E ^[1]

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1. Los Alamos National Laboratory, Los Alamos, NM

New experimental diagnostics and computational modeling provide an unprecedented means for improving the understanding of energetic material behavior at the mesoscale (grain or crystal ensemble levels). This study focuses on the determination of appropriate constitutive and EOS property data of the constituents of an energetic composite at high stress and moderate strain-rate states. The Sandia Z accelerator is used to determine the mechanical response of energetic composites via isentropic ramp wave compression loading. In this paper we describe an energy source method in CTH that models ramp loading for the analysis of ICE experiments. This approach is applied to design experimental configurations to probe the constituent response of PBX 9501 subjected to {approx}40 Kbar ramp load over 300 ns duration. Multiple VISAR are used to determine the averaged response of the composite material in comparison to the individual constituents including the effects of anisotropy of HMX crystals and the interactions of fine crystallites with binder material.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 967800
• Report Number(s): SAND2005-4586C
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
43 PARTICLE ACCELERATORS
ACCELERATORS
ANISOTROPY
BINDERS
COMPOSITE MATERIALS
COMPRESSION
DESIGN
ENERGY SOURCES
PROBES
SIMULATION
STRAIN RATE