Viscoplastic Analysis of a Continuous Cylindrical Opening Surrounded by Volcanic Tuff

Abstract

Nuclear blast effect on a deep underground tunnel was studied for quasi-static and quasi-transient loading conditions. A finite element model was developed and used with a two-dimensional constant strain triangle computer code. Viscoplasticity was introduced through the Malvern flow law in conjunction with the Drucker-Prager constitutive equations. The quasi-static results compared favorably with experimental studies. Quasi-transient results can be compared against future experimental work and field tests.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA126040

Entities

People

  • David E. Schmitz

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Computers
  • Constitutive Equations
  • Elastic Properties
  • Equations
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Mechanics
  • Plastic Flow
  • Plastic Properties
  • Rock Mechanics
  • Stress Concentration
  • Stress Strain Relations
  • Stresses
  • Two Dimensional
  • Viscoplasticity

Fields of Study

  • Physics

Readers

  • Internal Combustion Engine (ICE) Technology.
  • Mechanical Engineering/Mechanics of Materials.
  • Seismology