On the Influence of the Corner Singularity on Kinking Mixed-Mode Crack Propagation
The aim of the presentation is to highlight the influence of the kink, developing at the beginning of mixed-mode crack growth, on the propagation behavior of the crack. Le et al.  have shown that the variational principle of a body containing a crack results in the principle of maximum energy release rate incorporating the stress intensity factors of the kinked crack. Here the influence of the kink and the kinking angle, resulting in a singular field around the corner, on the crack growth is analyzed. The generalized stress intensity factors at the kinks corner are computed with the help of a FEM strategy. The influence of these on the T-stresses and the plastic energy dissipated at the kink is determined using a small scale yielding approach. The impact of these results on mixed-mode crack propagation is discussed.
J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel
H. Schütte and K. Molla-Abbasi, "On the Influence of the Corner Singularity on Kinking Mixed-Mode Crack Propagation ", Key Engineering Materials, Vols. 348-349, pp. 585-588, 2007