Issue 38

R. Shravan Kumar et alii, Frattura ed Integrità Strutturale, 38 (2016) 19-25; DOI: 10.3221/IGF-ESIS.38.03 24 Figure 6 : Effect of threshold (  th ) parameter on the fatigue crack growth curve. Figure 7 : Effect of cohesive endurance limit (σ F ) parameter on the fatigue crack growth curve. C ONCLUDING REMARKS stress-state dependent cohesive model for fatigue is used in simulation of fatigue crack initiation and growth in a representative aluminum alloy. The model was shown to be capable of predicting both initiation and propagation reasonably well compared to as observed in the experiments [8]. From the parametric study it is observed that increase in the parameter, cohesive endurance strength (  F ), is causing a delay in the crack initiation with significantly lower crack growth rates. A similar effect of the parameter, A