A stripyield model including effects of hold periods at constant load

Utilising the NLR Stripyield cycle-by-cycle fatigue crack growth model a basic description of the time dependent effects associated with periods of constant load level has been added to model Fatigue-Creep interactions. An outline of the basic Creep model is given along with flow diagrams of the sub programs added to the Stripyield model. Other...

Improvement of the "corpus" crack opening model in the "ESA crack" software for damage tolerance analyses: Task report 2.1, Model development

At the NLR the CORPUS model was developed for prediction of fatigue crack growth under variable amplitude loading. In this document the different versions and areas of application are discussed. Problem areas in the applicability of the models are indicated and suggestions for improvement are made. In addition a Hybrid formulation is developed...