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On micro-to-macro connections in strong coupling multiscale modeling of softening materials
In this contribution we describe a methodology for the multiscale analysis of heterogeneous quasi-brittle materials. The algorithm is based on the finite element tearing and interconnecting FETI [1] method cast in a non-linear setting. Adaptive multiscale analysis is accounted for with the use of selective refinement at domains that undergo nonlinear processes. We focus on the micro-to-macro connection method which constitutes the strategy to handle incompatible interfaces arising from the connection of non-matching meshes. The behaviour of standard collocation and average compatibility techniques is assessed for a multiscale analysis of damage propagation in a quasi- brittle material. The choice of the connection strategy has an influence on the overall response and the computational cost of the analysis. ; Postprint (published version)
On micro-to-macro connections in strong coupling multiscale modeling of softening materials
In this contribution we describe a methodology for the multiscale analysis of heterogeneous quasi-brittle materials. The algorithm is based on the finite element tearing and interconnecting FETI [1] method cast in a non-linear setting. Adaptive multiscale analysis is accounted for with the use of selective refinement at domains that undergo nonlinear processes. We focus on the micro-to-macro connection method which constitutes the strategy to handle incompatible interfaces arising from the connection of non-matching meshes. The behaviour of standard collocation and average compatibility techniques is assessed for a multiscale analysis of damage propagation in a quasi- brittle material. The choice of the connection strategy has an influence on the overall response and the computational cost of the analysis. ; Postprint (published version)
On micro-to-macro connections in strong coupling multiscale modeling of softening materials
Lloberas Valls, Oriol (author) / Rixen, Daniel J. (author) / Simone, Angelo (author) / Sluys, Lambertus J. (author) / Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental / Centre Internacional de Mètodes Numèrics en Enginyeria / Universitat Politècnica de Catalunya. RMEE - Grup de Resistència de Materials i Estructures en l'Enginyeria
2011-01-01
Conference paper
Electronic Resource
English
Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits , Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures , Brittleness--Mathematical models , Concurrent multiscale analysis , micro-to-macro connection , FETI , strain localization and softening , Fragilitat -- Models matemàtics
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