Article (Scientific journals)
An adaptive multiscale quasicontinuum approach for mechanical simulations of elastoplastic periodic lattices
Chen, Li; Berke, Peter; Massart, Thierry et al.
2022In Mechanics Research Communications, 126, p. 104019
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Keywords :
multiscale; quasicontinuum; lattice; beam; elastoplasticity; mesh adaptivity; refinement
Abstract :
[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 :
Civil engineering
Aerospace & aeronautics engineering
Materials science & engineering
Mechanical engineering
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
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)
External co-authors :
yes
Language :
English
Title :
An adaptive multiscale quasicontinuum approach for mechanical simulations of elastoplastic periodic lattices
Publication date :
2022
Journal title :
Mechanics Research Communications
ISSN :
0093-6413
Publisher :
Elsevier, United Kingdom
Volume :
126
Pages :
104019
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Computational Sciences
FnR Project :
FNR14310624 - Towards Efficient Simulations Of Aggregates Of Slender Bodies., 2019 (01/04/2020-31/03/2023) - Lars Beex
Name of the research project :
ROPETEST
Funders :
FNR - Fonds National de la Recherche [LU]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
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since 30 December 2022

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