Numerical simulation of fatigue crack growth rate and crack retardation due to an overload using a cohesive zone model

In this work, a numerical method is pursued based on a cohesive zone model (CZM). The method is aimed at simulating fatigue crack growth as well as crack growth retardation due to an overload. In this cohesive zone model, the degradation of the material strength is represented by a variation of the cohesive traction with respect to separation of...

Survey on damage mechanics models for fatigue life prediction

Engineering methods to predict the fatigue life of structures have been available since the beginning of the 20th century. However, a practical problem arises from complex loading conditions and a significant concern is the accuracy of the methods under variable amplitude loading. This paper provides an overview of existing fatigue damage models...

Numerical simulation of stable fatigue crack growth rate using a cohesive zone model

Predicting the remaining fatigue life of a structure with crack(s) is generally conducted by the fracture mechanics method. This method is aimed at predicting the crack growth and final fracture due to fluctuating loads. The crack growth curve required for these calculations is constructed on the basis of experiments. However, obtaining these...