New Framework for Constitutive Modeling and Numerical Simulation of Energetic Crystals

Abstract

The central goal of this research is to respond to the need to realistically predict accumulated plastic deformation in low symmetry energetic crystals undergoing dynamic events. A realistic description of plastic deformation during dynamic events can only be achieved only if accurate plasticity models are available at the crystal scale. In order to describe the initiation of energetic material through the occurrence of local hot spots induced by plastic dissipation at the crystal scale, a new computationally-efficient framework has been developed using appropriate multiscale techniques in conjunction with the new formulation for the description of the constituent crystal behavior. This new numerical framework will enable accurate predictions of the influence of loading history on the accumulation of plastic deformation in energetic material and as such be more readily applicable to predict local initiation.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 18, 2021
Accession Number
AD1153178

Entities

People

  • Benoit Revil-baudard

Organizations

  • University of Florida

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Coordinate Systems
  • Crystal Lattices
  • Crystal Structure
  • Crystallography
  • Crystals
  • Energetic Materials
  • Engineering
  • Equations
  • Explosives
  • Ferrium
  • Geometry
  • Hot Spots
  • Law
  • Materials
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanics
  • Orientation (Direction)
  • Plastic Bonded Explosives
  • Scientific Research

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Materials Science (Mechanical Engineering).
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers