Abstract

CAMANHO, Pedro P.; TURON, Albert  and  COSTA, Josep. Simulation of delamination growth under high cycle fatigue using cohesive zone models. C.Tecn. Mat. [online]. 2008, vol.20, n.1-2, pp.40-44. ISSN 0870-8312.

A cohesive zone model is proposed for the simulation of delamination growth in composite materials under high-cycle fatigue loading. The basis for the formulation is an interfacial constitutive law that links fracture mechanics and damage mechanics relating the evolution of the damage variable, d, with the crack growth rate, da/dN. The cohesive zone model is implemented in ABAQUS finite element code and used in the simulation of carbon-epoxy test specimens cyclically loaded in mode I, mode II and mixed-mode I and II. The accuracy of the model is assessed by comparing the predictions with experimental data.

Keywords : Composite materials; delamination; fatigue; cohesive models.

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