Geralf Hütter

Simulation of fatigue crack growth with a cyclic cohesive zone model

Fatigue crack growth is simulated for an elastic solid with a cyclic cohesive zone model (CZM). Material degradation and thus separation follows from the current damage state, which represents the amount of maximum transferable traction across the cohesive zone. The traction–separation relation proposed in the cyclic CZM includes non-linear paths for both un- and reloading. This allows a smooth transition from reversible to damaged state. The exponential traction–separation envelope is controlled by two shape parameters. Moreover, a lower bound for damage evolution is introduced by a local damage dependent endurance limit, which enters the damage evolution equation. The cyclic CZM is applied to mode I fatigue crack growth under

Ductile crack propagation by plastic collapse of the intervoid ligaments

K_{\mathrm{I}}

Meinhard Kuna: Physics and Engineering at the Crack Tip—A Retrospective

KI-controlled external loading conditions. The influences of the model parameters with respect to static failure load

Micromechanical Modeling of Crack Initiation and Propagation in the Ductile-Brittle Transition Region

K_{\mathrm{0}}

Simulation of crack propagation using a gradient-enriched ductile damage model based on dilatational strain

K0, threshold load