Accession Number:

ADA002264

Title:

Bifurcation of a Running Crack in Antiplane Strain,

Descriptive Note:

Corporate Author:

NORTHWESTERN UNIV EVANSTON ILL STRUCTURAL MECHANICS LAB

Personal Author(s):

Report Date:

1974-11-01

Pagination or Media Count:

35.0

Abstract:

An elastodynamic explanation of running crack bifurcation is explored. The geometry is a semi-infinite body in a state of anti-plane strain, which contains a two-dimensional edge crack. It is assumed that a quasi-static increase of the external loads gives rise to rapid crack propagation at time t 0, with an arbitrary and time-varying speed, but in the plane of the crack. The elastodynamic intensity factors are computed, and the balance of rates of energies is employed to discuss the conditions for bifurcation.

Subject Categories:

  • Mechanics
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE