Combination of an adaptive remeshing technique with a coupled FEM–DEM approach for analysis of crack propagation problems
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Cita com:
hdl:2117/327338
Tipus de documentArticle
Data publicació2020-07
EditorSpringer
Condicions d'accésAccés obert
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Abstract
This paper presents an enhanced coupled approach between the finite element method (FEM) and the discrete element method (DEM) in which an adaptive remeshing technique has been implemented. The remeshing technique is based on the computation of the Hessian of a selected nodal variable, i.e. the mesh is refined where the curvature of the variable field is greater. Once the Hessian is known, a metric tensor is defined node-wise that serves as input data for the remesher (MmgTools) that creates a new mesh. After remeshing, the mapping of the internal variables and the nodal values is performed and a regeneration of the discrete elements on the crack faces of the new mesh is carried out. Several examples of fracturing problems using the enhanced FEM–DEM formulation are presented. Accurate results in comparison with analytical and experimental solutions are obtained.
Descripció
The final publication is available at Springer via http://dx.doi.org/10.1007/s40571-019-00306-4
CitacióCornejo, A. [et al.]. Combination of an adaptive remeshing technique with a coupled FEM–DEM approach for analysis of crack propagation problems. "Computational particle mechanics", Juliol 2020, vol. 7, núm. 4, p. 735-752.
ISSN2196-4378
Versió de l'editorhttps://link.springer.com/article/10.1007/s40571-019-00306-4
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