Interaction of a dislocation with a surface crack in nonlocal elasticity

✍ Scribed by Ke-Lin Pan

• Publisher: Springer Netherlands
• Year: 1995
• Tongue: English
• Weight: 484 KB
• Volume: 69
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00037381

✦ Synopsis

The interaction of a screw dislocation with a surface crack is analyzed in nonlocal elasticity under applied shear loading. The stress field is determined near the crack and the dislocation. The classical singularities at the crack tip and the dislocation core are eliminated. A maximum of the shear stress near the dislocation and a minimum between the crack and the dislocation are found, which reveals the interaction of the dislocation with the crack. Two particular cases are obtained: one is no dislocation and the other is no crack in the medium. Numerical calculations show the results from nonlocal elasticity are more rational physically than those from the classical one.