Calcul do champ de contrainte en pointe de fissure en elasticite plane en grandes deformations
Keywords:
iterative procedure, finite element, elasticity, large strains, crack, interface, stress intensity factorAbstract
An iterative procedure for the computation of the stress field near a crack tip within the frame of large strain plane elasticity is proposed. This numerical process, based on finite element method, has been already verified in linear elasticity context. It permits especially to obtain an estimation of some asymptotic coefficients associated with the local solution for rubberlike materials. One of them can be compared with a stress intensity factor of the linear theory and therefore is involved in a crack propagation criterium of non-linear Fracture Mechanics. Numerical tests are presented. The results obtained are in good agreement with known analytical solutions.
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