Accession Number:

ADA038113

Title:

A Ray Theory for Elastodynamic Stress Intensity Factors.

Descriptive Note:

Interim rept.,

Corporate Author:

NORTHWESTERN UNIV EVANSTON ILL STRUCTURAL MECHANICS LAB

Personal Author(s):

Report Date:

1977-03-01

Pagination or Media Count:

31.0

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

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE