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An Engineering Solution for using Coarse Meshes in the Simulation of Delamination with Cohesive Zone Models
Turon Travesa, Albert; Dávila, Carlos G.; Camanho, Pedro Manuel Ponces Rodrigues de Castro; Costa i Balanzat, Josep
This paper presents a methodology to determine the parameters used in the simulation of delamination in composite materials using decohesion finite elements. A closed-form expression is developed to define the stiffness of the cohesive layer. A novel procedure that allows the use of coarser meshes of decohesion elements in large-scale computations is proposed. The procedure ensures that the energy dissipated by the fracture process is correctly computed. It is shown that coarse-meshed models defined using the approach proposed here yield the same results as the models with finer meshes normally used in the simulation of fracture processes
NASA/TM-2005-213547
Mecànica de fractura
Fracture mechanics
Materials compostos -- Mètodes de simulació
Composite materials -- Simulation methods
Materials compostos -- Fatiga
Composite materials -- Fatigue
Tots els drets reservats
Article
info:eu-repo/semantics/publishedVersion
National Aeronautics and Space Administration
         

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