| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 808773 | Theoretical and Applied Fracture Mechanics | 2008 | 6 Pages |
Investigated is the problem of the interaction between a moving screw dislocation and an interfacial crack in two orthotropic materials. The closed form solutions of this problem is obtained by using Riemann-Schwarz’s symmetry principle integrated and the analysis singularity of complex functions. The stress intensity factors and the strain energy density factors have been investigated, the angle of crack initiation has been found. The results show that the shielding effect of dislocation for crack tips decreases with the increase of the distance between dislocation and crack tip and tends to zero at infinite, in additional, larger dislocation velocity leads to shielding effect waning. The normalized minimum SEDF increases with decrease of the velocity of dislocation and the distance between dislocation and crack tip and the ratio of shear modulus. The presented solutions contain previously known results as the special cases.
