Abstract
In Part I of this series [J. Padovan and Y. H. Guo, Engng Fracture Mech. 48,405–425 (1994)], a moving template scheme was developed which can model the propagation of long cracks possessing complex topologies and mixed mode behavior. This part extends the procedure to the propagation of multiple fatigue cracks. The methodology is benchmarked over a wide variety of single and multiple crack problems involving complex mixed mode behavior. This includes such problem features as compound loading, multiple cracks, crack wake induced shading of the unfolding stress distribution, different growth rates for the various cracks as defined by the stress redistribution, as well as mixed mode behavior. Additionally, formal expressions are derived which illustrate the advantages of employing the HPT scheme (hierarchical substructuring) to streamline the computational effort. These point to significant cost effective improvements.
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