Issue 38

R. Shravan Kumar et alii, Frattura ed Integrità Strutturale, 38 (2016) 19-25; DOI: 10.3221/IGF-ESIS.38.03 25 threshold (  th ), is observed where higher the threshold value, more the delay in the crack initiation. However the effect of threshold parameter on crack growth rates is negligible. The parameter accumulated cohesive length (   ) with increase in its value exhibits slower crack growth rate and delay in the initiation of the fatigue crack. R EFERENCES [1] Roe, K.L., Siegmund, T., An irreversible cohesive zone model for interface fatigue crack growth simulation, Engineering Fracture Mechanics, 70 (2002) 209-32. [2] Jha, D., Banerjee, A., A cohesive model for fatigue failure in complex stress-states, International Journal of Fatigue, 36 (2011) 155-62. [3] Nguyen, O., Repetto, E.A., Ortiz, M., Radovitzky, R.A., A cohesive model of fatigue crack growth, International Journal of Fracture, 110 (2001) 351-69. [4] Yang, B., Mall, S., Ravi-Chandar, K., A cohesive zone model for fatigue crack growth in quasibrittle materials, International Journal of Solids and Structures, 38 (2001) 3927-44. [5] Ural, A., Krishnan, V.R., Papoulia, K.D., A cohesive zone model for fatigue crack growth allowing for crack retardation, International Journal of Solids and Structures, 46 (2009) 2453-62. [6] Gao, Y.F., Bower, A.F., A simple technique for avoiding convergence problems in infinite simulations of crack nucleation and growth on cohesive interfaces, Modeling and Simulation in Material Science and Engineering, 12 (2004) 453-63. [7] Banerjee, A., Manivasagam, R., Triaxiality dependent cohesive zone model, Engineering Fracture Mechanics, 76 (2009) 1761-70. [8] Bharadwaj, V. M., Banerjee, A., Effect of mode-mixity on fatigue crack growth, Procedia Engineering, 86 (2014) 653-61. [9] Faizan Md Rashid, Banerjee, A., Simulation of ductile fracture of aluminum alloy using a triaxiality dependent cohesive zone model. 4th International Conference on Computational Modeling of Fracture and Failure of Materials and Structures (CFRAC-2015), Ecole Normale Superieure de Cachan, Paris, France (2015).