A Study of Different Methods of Coding a Capped Model

Abstract

A study has been made of methods of adapting constitutive equations for granite to numerical computations of wave propagation. The constitutive equations considered are the so-called capped model, which incorporates a strain-hardening surface to control dilatency and a stationary fracture surface. Difficulties have been encountered in some instances when this model has been used for ground shock computations because the model was unproperly coded. This report describes two acceptable methods of coding the model and the results of some test cases which will help reveal errors in the future where similar complicated constitutive equations are being coded for the first time.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1973
Accession Number
AD0761646

Entities

People

  • J. Isenberg

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Classification
  • Computations
  • Computer Programming
  • Computer Programs
  • Constitutive Equations
  • Contracts
  • Equations
  • Ground Shock
  • Hardening
  • Materials
  • Pile Drivers
  • Potential Flow
  • Radial Stress
  • Security
  • Strain Hardening
  • Wave Propagation

Readers

  • Calculus or Mathematical Analysis
  • Computational Modeling and Simulation
  • Mechanical Engineering/Mechanics of Materials.