Strengthening and Stiffening of Plastic Bonded Explosives Under Pressure and Metal-Like Mechanical Properties

Abstract

The mechanical properties of composite plastic bonded explosives are being studied as a function of hydrostatic pressure. The flow stress and the modulus obtained in simple compression are both found to increase with increasing confining pressure. Thus, these materials become stronger and stiffer with increasing pressure. The failure process also changes with pressure. At atmospheric pressure, failure is primarily due to crack processes, while at elevated pressures failure is due primarily to plastic flow. Several mechanisms, which account for the pressure dependencies of the flow stress, the modulus, and the failure processes are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2005
Accession Number
ADA441083

Entities

People

  • Brett Reddingius
  • Donald A. Wiegand

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Counter IED
  • Weapons Technologies

DTIC Thesaurus Topics

  • Barometric Pressure
  • Chemistry
  • Composite Materials
  • Energetic Materials
  • Explosives
  • Failure Mode And Effect Analysis
  • Glass Transition Temperature
  • Hydrostatic Pressure
  • Materials
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Modulus Of Elasticity
  • Plastic Bonded Explosives
  • Plastic Flow
  • Stress Strain Relations
  • Transition Temperature

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials