A comprehensive investigation on macro–micro crack interactions in functionally graded materials using ordinary-state based peridynamics
M. Ozdemir, Michiya Imachi, Satoyuki Tanaka, Selda Oterkus, Erkan Oterkus
Abstract
In the present work, interactions between a macro-crack and various micro-crack configurations are studied extensively. Influence of different micro-crack configurations on propagation of a main crack is numerically examined by ordinary state-based peridynamics. Certain micro-crack configurations improve toughness of the specimens, while the some only has marginal impact on the crack growth rate. Furthermore, very complex crack patterns are effectively simulated by the present implementation of ordinary state-based formulation.
Topics & Concepts
PeridynamicsMacroMaterials scienceToughnessCrack closureFracture mechanicsStructural engineeringStrain energy release rateWork (physics)MechanicsComposite materialComputer scienceMechanical engineeringEngineeringPhysicsContinuum mechanicsProgramming languageNumerical methods in engineeringGeotechnical Engineering and Underground StructuresRock Mechanics and Modeling