Strain Energy Density Criteria for Dynamic Fracture and Dynamic Crack Branching.

Abstract

Dynamic extension of Sih's fracture criterion based on strain energy density factor, r subscript c (dW/dV), is used to analyze dynamic crack propagation and branching. Influence of the nonsingular components, which are known as the higher order terms (HOT) in the crack tip stress field, on the strain energy density distribution at a critical distance surrounding the crack tip moving at constant crack velocity is examined. This r subscript c (dW/dV) fracture criterion is then used to analyze available dynamic photoelastic results of crack branching and of engineering materials. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1985
Accession Number
ADA157914

Entities

People

  • Albert S. Kobayashi
  • M. Ramulu

Organizations

  • University of Washington

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Aluminum
  • Contracts
  • Crack Propagation
  • Crack Tips
  • Cracks
  • Engineering
  • Equations
  • Fracture (Mechanics)
  • Materials
  • Mechanical Engineering
  • Mechanics
  • Military Research
  • Stress Waves
  • Stresses
  • Universities
  • Waves

Fields of Study

  • Engineering

Readers

  • Linear Algebra
  • Plasma Physics / Magnetohydrodynamics
  • Structural Health Monitoring of Composite Structures.