Modeling of Interfacial Fracture in Incompressible Materials with Varying Modulus Mismatch

Abstract

Numerical modeling is used to evaluate the effects of modulus mismatch on interfacial fracture. Different modulus ratios are considered, as are different mode mixities. The magnitudes of the complex stress intensity factors are evaluated using the energy domain integral approach, and the phase angles are measured using extrapolation of bond line traction data to r = 0. The results indicate that moderate changes in the modulus ratio have only a small effect on either the magnitude or phase angle of the complex stress intensity factor. These predictions confirm earlier experimental conclusions and suggest that the elastic mismatch is not a strong factor in determining the interfacial fracture of plane strain incompressible materials.

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Document Details

Document Type
Technical Report
Publication Date
Feb 10, 1998
Accession Number
ADA397972

Entities

People

  • T. C. Miller

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Contour Integrals
  • Coordinate Systems
  • Crack Propagation
  • Cracks
  • Fracture (Mechanics)
  • J Integrals
  • Materials
  • Mechanics
  • Military Research
  • Modulus Of Elasticity
  • Propellants
  • Solid Propellants
  • Stiffness
  • Stress Intensity Factors

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Materials Science (Mechanical Engineering).
  • Structural Dynamics.