PSI - Issue 2_A

M. Nourazar et al. / Procedia Structural Integrity 2 (2016) 2415–2423 Author name / Structural Integrity Procedia 00 (2016) 000–000

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Fig. 4. Normalized stress intensity factors of crack tips versus the dimensionless crack length.

Fig. 5. Normalized stress intensity factors of crack tips versus the dimensionless crack length

5. Conclusions In this paper, the anti-plane stress analysis of a non-homogeneous orthotropic half-plane weakened by several moving cracks is obtained. The dislocation solutions are used to construct integral equations for a functionally graded orthotropic half-plane weakened by multiple moving straight cracks. The effect of crack velocity on stress intensity factor of cracks interaction of cracks and the ratio of the module of elasticity of the functionally graded orthotropic half-plane were studied. To show the applicability of the procedure more examples are solved where in the interaction between moving cracks is investigated. References Wang, X. D., Meguid, S. A., 1995. On the dynamic crack propagation in an interface with spatially varying elastic properties. International Journalof Fracture 69, 87–99. Das, S., Patra, B., 1996. Moving Griffith crack at the interface of two dissimilar orthotropic half planes. Engineering Fracture Mechanics 54, 523 531. Chalivendra, V. B., Shukla, A., Parameswaran, V., 2002. Dynamic out of plane displacement fields for an inclined crack in graded materials. Journal of Elasticity 69, 99-119. Jiang, L. Y., Wang, X. D., 2002. On the dynamic propagation in an interphase with spatially varying elastic properties under in-plane loading. International Journal of Fracture 114, 225–244. Bi, X. S., Cheng, J., Chen, X. L., 2003. Moving crack for functionally grated material in an infinite length strip under antiplane shear, Theoretical