We propose an eXtended Finite Element Method convergent to the asymptotic solution of a thin interface problem for both planar and curved imperfect interfaces in three dimensions. The main advantage over standard cohesive-zone models is the bulk-mesh size independence. With respect to standard eXtended Finite Element Method, in the proposed procedure, blending and quadrature sub-domains are not required. The focus is on the evaluation of the accuracy of the proposed approach in solving three-dimensional benchmark tests. The numerical results are compared with those available from analytical solutions and spring-like interface models

Variationally consistent eXtended FE model for 3D planar and curved imperfect interfaces

BENVENUTI, Elena;PONARA, Nicola;TRALLI, Antonio Michele
2013

Abstract

We propose an eXtended Finite Element Method convergent to the asymptotic solution of a thin interface problem for both planar and curved imperfect interfaces in three dimensions. The main advantage over standard cohesive-zone models is the bulk-mesh size independence. With respect to standard eXtended Finite Element Method, in the proposed procedure, blending and quadrature sub-domains are not required. The focus is on the evaluation of the accuracy of the proposed approach in solving three-dimensional benchmark tests. The numerical results are compared with those available from analytical solutions and spring-like interface models
2013
Benvenuti, Elena; Giulio, Ventura; Ponara, Nicola; Tralli, Antonio Michele
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1865516
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