Thermodynamically Consistent Decoupled Strength Model for Two-Phase Materials with Phase Transistions

Abstract

A constitutive two-phase material model is formulated, which satisfies the decoupling of deviatoric stress and pressure response required by many hydrocodes. Two-phase materials are assumed to be non-dispersive. Basis of the present model is a decoupled model based on a general Maxwell-type viscoelastic model. The proposed formulation provides thermodynamic consistency for the case of small elastic shear strains and unrestricted volumetric response. The model is verified against experimental data on the shock wave propagation in iron resulting in alpha-epsilon phase transition, while the strength effects being observed at the same time.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2009
Accession Number
ADA526621

Entities

People

  • A. D. Resnyansky

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Constitutive Equations
  • Differential Equations
  • Energetic Materials
  • Energy
  • Equations
  • Equations Of State
  • Experimental Data
  • Heat Transfer
  • Hydrocodes
  • Impact
  • Mechanics
  • Phase Transformations
  • Shock Waves
  • Strain Rate
  • Transitions
  • Wave Propagation

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.
  • Mechanical Engineering/Mechanics of Materials.