Descripción
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Ignoring crack tip effects, the stability of the X-FEM discretization is trivial for open crack, but remains a challenge if we constrain the crack closed (i.e.: the bi-material problem). Here, we develop a formulation for general cohesive interactions between crack faces. The stability is proven for any linear crack stiffness and, in particular, for the closed crack. Also, a nonlinear cohesive softening is illustrated. We perform a benchmark with some simpler approaches, for closed crack (i.e. Lagrange multiplier) and for cohesive crack (i.e. penalty approach). Due to the analogies to stable X-FEM and Nitsche?s methods, we see that the method simplifies the implementation and is attractive in dynamic explicit codes. | |
Internacional
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JCR del ISI
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Si |
Título de la revista
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International Journal For Numerical Methods in Engineering |
ISSN
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0029-5981 |
Factor de impacto JCR
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1,961 |
Información de impacto
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Volumen
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101 |
DOI
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Número de revista
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Desde la página
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540 |
Hasta la página
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570 |
Mes
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SIN MES |
Ranking
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