[en] The quasicontinuum method is a multiscale method that combines locally supported coarse-grained domains, with small regions in which the microstructural model is fully resolved. This contribution proposes the first adaptive formulation of the method for microstructural elastoplasticity. The microstructural model uses an elastoplastic beam description. The indicator for refinement is the occurrence of plastic deformation, such that plasticity can only occur in fully resolved regions. An illustrative numerical example of a scratch test of an elastoplastic Kelvin lattice demonstrates the capabilities of the resulting framework.
Disciplines :
Ingénierie civile Ingénierie aérospatiale Science des matériaux & ingénierie Ingénierie mécanique Ingénierie, informatique & technologie: Multidisciplinaire, généralités & autres
Auteur, co-auteur :
CHEN, Li ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
Berke, Peter; Université Libre de Bruxelles - ULB > Building, Architecture and Town Planning (BATir) department > Prof
Massart, Thierry; Université Libre de Bruxelles - ULB > Building, Architecture and Town Planning (BATir) department > Prof
BORDAS, Stéphane ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
BEEX, Lars ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
An adaptive multiscale quasicontinuum approach for mechanical simulations of elastoplastic periodic lattices
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