Nonlocal interaction of a dislocation with a crack
Journal
Archive of Applied Mechanics
Journal Volume
64
Journal Issue
1
Pages
44-51
Date Issued
1993
Author(s)
Abstract
Based on the classical stress analysis, the stress field of a screw dislocation near a semi-infinite crack is investigated by a conformal mapping method. The classical image force on the dislocation due to the crack is presented by the obtained classical image stress. To eliminate the singularity of the stress field at the crack tip, the nonlocal elasticity theory is adopted. A maximum of the image stress is found near the crack tip and the nonlocal image force is then acquired by the obtained nonlocal stress field. Both the stress and the image force show much difference from the classical ones and seem to be more reasonable physically. © 1993 Springer-Verlag.
SDGs
Type
journal article