Tension Cutoff and Parameter Identification for the Viscoplastic Cap Model.

Abstract

A viscoplastic formulation based on Perzyna's elastic/viscoplastic theory and the Sandler and Rubin CAP75 plasticity model was extended to included a tension cutoff mechanism. The mechanism employs separate fluidity parameters for the dilatational and deviatoric stress releases. A parameter identification study was performed to determine the sensitivity of the parameters and means of determining them from experimental data. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1983
Accession Number
ADA128304

Entities

People

  • Michael G. Katona

Organizations

  • University of Notre Dame

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Axial Loads
  • Bulk Modulus
  • Computer Programs
  • Creep
  • Elastic Properties
  • Experimental Data
  • Mechanics
  • Plastic Properties
  • Sedimentary Rocks
  • Shear Modulus
  • Shear Stresses
  • Steady State
  • Strain Rate
  • Stress Strain Relations
  • Stresses
  • Triaxial Stresses
  • Viscous Flow

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Image Processing and Computer Vision.
  • Mechanical Engineering/Mechanics of Materials.