The XNOVAKTC Rheological Model.

Abstract

The rheological model, which is incorporated in the NOVA family of interior ballistic codes (Gough 1974), of which XNOVAKTC is the latest version, is examined in detail. The assumptions which are made in this model are also examined in detail. These assumptions are linked to the availability of experimental data, which may be used to guide constitutive modeling. Both empirical as well as analytical/experimental models are presented to provide the required mathematical closure of the solid-phase model. Previous work in this constitutive modeling area is discussed. Interior ballistic simulations of realistic systems by XNOVAKTC are shown to predict values of intrinsic intergranular bed stress in excess of 100 MPa. However, available mixture stress vs. mixture density measurements have shown pronounced nonlinear behavior at values well below 100 MPa, which suggests that measurements are needed over a wider range of intrinsic stresses.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1993
Accession Number
ADA263298

Entities

People

  • Paul J. Conroy

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Artillery
  • Energetic Materials
  • Equations
  • Equations Of Motion
  • Jet Propulsion
  • Materials
  • Materials Laboratories
  • Materials Science
  • Mechanical Engineering
  • Mechanics
  • Military Research
  • Navier Stokes Equations
  • Propellants
  • Research Facilities
  • Solid Phases
  • Solid Propellants
  • Stress Strain Relations

Readers

  • Computational Modeling and Simulation
  • Mechanical Engineering/Mechanics of Materials.
  • Rocket Propulsion.