An Internal Variable Theory of Deformation, Damage, and Fragmentation of Solids

Abstract

A unified framework of continuum elasticity, inelasticity, damage mechanics, and fragmentation in solid materials is presented. A free energy functional accounts for thermodynamics of elastic deformation and damage, with kinetic relations for inelastic rates adapted from prior literature. Average fragment velocities follow from momentum conservation, average fragment sizes are deduced from an energy balance, and size and velocity distributions are constructed following entropy maximization. The model is further developed to study concrete subjected to ballistic loading scenarios.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2006
Accession Number
ADA456660

Entities

People

  • John D. Clayton

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Angular Momentum
  • Concrete
  • Elastic Properties
  • Energy
  • Entropy
  • Fragmentation
  • Free Energy
  • Materials
  • Mechanical Properties
  • Mechanics
  • Military Research
  • Momentum
  • Nova Scotia
  • Physics
  • Plastic Properties
  • Statistical Mechanics
  • Thermodynamics

Readers

  • Computational Modeling and Simulation
  • Mechanical Engineering/Mechanics of Materials.
  • Molecular Photonics/Laser Physics