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Structural Engineering and Mechanics Volume 12, Number 5, November 2001 , pages 475-490 DOI: https://doi.org/10.12989/sem.2001.12.5.475 |
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Remeshing techniques for r-adaptive and combined h/r-adaptive analysis with application to 2D/3D crack propagation |
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H. Askes, L.J. Sluys and B.B.C. de Jong (Netherlands)
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| Abstract | ||
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Remeshing strategies are formulated for r-adaptive and h/r-adaptive analysis of crack propaga-tion. The relocation of the nodes, which typifies r-adaptivity, is a very cheap method to optimise a given discretisation since the element connectivity remains unaltered. However, the applicability is limited. To further improve the finite element mesh, a combined h/r-adaptive method is proposed in which h-adaptivity is applied whenever r-adaptivity is not capable of further improving the discretisation. Two and three-dimensional examples are presented. It is shown that the r-adaptive approach can optimise a discretisation at minimal computational costs. Further, the combined h/r-adaptive approach improves the performance of a fully r-adaptive technique while the number of h-remeshings is reduced compared to a fully h-adaptive technique. | ||
| Key Words | ||
| adaptivity; remeshing; ALE; crack propagation; failure analysis; localisation. | ||
| Address | ||
| H. Askes and L.J. Sluys, Faculty of Civil Engineering and Geosciences, Koiter Institute Delft, Delft University of Technology, P.O. Box 5048, 2600 GA Delft, The Netherlands B.B.C. de Jong, TNO Building and Construction Research, P.O. Box 49, 2600 AA Delft, The Netherlands | ||