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Reference Category Journals
DOI 10.1007/s00466-006-0051-z
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Title (Primary) A comparison of mapping algorithms for hierarchical adaptive FEM in finite elasto-plasticity
Author Bucher, A.; Meyer, A.; Görke, U.-J.; Kreißig, R.
Journal Computational Mechanics
Year 2007
Department ENVINF
Volume 39
Issue 4
Page From 521
Page To 536
Language englisch
Keywords FEM; adaptivity; mapping algorithms; finite deformations; elasto-plasticity
Abstract The aim of this contribution is a comparison of different mapping techniques usually applied in the field of hierarchical adaptive FE-codes. The calculation of mechanical field variables for the modified mesh is an important but sensitive aspect of adaptation approaches of the spatial discretization. Regarding non-linear boundary value problems procedures of mesh refinement and coarsening imply the determination of strains, stresses and internal variables at the nodes and the Gauss points of new elements based on the transfer of the required data from the former mesh. The kind of mapping of the field variables affects the convergence behaviour as well as the costs of an adaptive FEM-calculation in a non-negligible manner. In order to improve the stability as well as the efficiency of the adaptive process a comparison of different mapping algorithms is presented and evaluated. Within this context, the mapping methods taken into account are an element-oriented extrapolation procedure using special shape functions, a patch-oriented transfer approach and, the allocation of nodal history-dependent state (field) variable data using a supplementary integration of the material law at the nodes of the elements
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=1687
Bucher, A., Meyer, A., Görke, U.-J., Kreißig, R. (2007):
A comparison of mapping algorithms for hierarchical adaptive FEM in finite elasto-plasticity
Comput. Mech. 39 (4), 521 - 536