Accession Number:

ADA029665

Title:

Wave Propagation, Elastodynamic Stress Singularities and Fracture

Descriptive Note:

Technical Report

Corporate Author:

NORTHWESTERN UNIV EVANSTON IL EVANSTON United States

Personal Author(s):

Report Date:

1976-05-01

Pagination or Media Count:

19.0

Abstract:

The singular part of the elastodynamic field in the vicinity of a crack tip plays an important role in fracture mechanics considerations. In this paper analytical, numerical and experimental methods to determine near-tip elastodynamic fields are reviewed, and the interpretation of stress intensity factors is discussed within the context of the fracture criterion of the balance of rates of energies. Elastodynamic effects generated by rapid propagation of the crack as well as by the diffraction of incident stress waves are considered. Propagation in the plane of the crack, as well as skew crack propagation and crack bifurcation are investigated.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE