A mixed variational formulation with discontinuous displacements and continuous tractions is proposed for the analysis of cohesive-crack propagation in elastic media. Such a formulation gives rise to a peculiar finite-element discretization scheme that is based on the Johnson-Mercier composite elements as to the stresses. Numerical results concerning classical benchmark problems are proposed and need for future developments highlighted, including the analysis of elastic-plastic and incompressible media.
A mixed approach to cohesive crack propagation
BRUGGI, MATTEO;
2005-01-01
Abstract
A mixed variational formulation with discontinuous displacements and continuous tractions is proposed for the analysis of cohesive-crack propagation in elastic media. Such a formulation gives rise to a peculiar finite-element discretization scheme that is based on the Johnson-Mercier composite elements as to the stresses. Numerical results concerning classical benchmark problems are proposed and need for future developments highlighted, including the analysis of elastic-plastic and incompressible media.File in questo prodotto:
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