A Ray Theory for Elastodynamic Stress Intensity Factors.

Abstract

Elastodynamic stress intensity factors generated by the interaction of wave motions with a crack are analyzed. It is shown that in an asymptotic approximation for high frequencies, the stress intensity factors at the edge of a crack are related to the fields of incident rays by a matrix of stress intensity factor coefficients, which can be computed from canonical solutions. The canonical solutions are the fields describing diffraction by a semi-infinite crack of plane body waves and plane surface waves, which are incident under an arbitrary angle with the edge of the crack. Several applications of the theory are presented. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1977
Accession Number
ADA038113

Entities

People

  • A. K. Gautesen
  • Jan D. Achenbach

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Coordinate Systems
  • Crack Tips
  • Cracks
  • Diffraction
  • Doppler Effect
  • Elastic Waves
  • Frequency
  • Geometry
  • Intensity
  • Mechanics
  • Physical Properties
  • Stress Intensity Factors
  • Stress Waves
  • Stresses
  • Surface Waves
  • Transverse Waves
  • Waves

Readers

  • Fluid Dynamics.
  • Materials Science (Mechanical Engineering).
  • Wave Propagation and Nonlinear Chaotic Dynamics.