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A finite element method for crack growth without remeshing

Abstract : An improvement of a new technique for modelling cracks in the finite element framework is presented. A standard displacement‐based approximation is enriched near a crack by incorporating both discontinuous fields and the near tip asymptotic fields through a partition of unity method. A methodology that constructs the enriched approximation from the interaction of the crack geometry with the mesh is developed. This technique allows the entire crack to be represented independently of the mesh, and so remeshing is not necessary to model crack growth. Numerical experiments are provided to demonstrate the utility and robustness of the proposed technique.
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Nicolas Moës, John Dolbow, Ted Belytschko. A finite element method for crack growth without remeshing. International Journal for Numerical Methods in Engineering, Wiley, 1999, 46 (1), pp.131-150. ⟨10.1002/(SICI)1097-0207(19990910)46:1<131::AID-NME726>3.0.CO;2-J⟩. ⟨hal-01004829⟩



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