Título:
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On micro-to-macro connections in strong coupling multiscale modeling of softening materials
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Autor/a:
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Lloberas Valls, Oriol; Rixen, Daniel J.; Simone, Angelo; Sluys, Lambertus J.
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Otros autores:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. RMEE - Grup de Resistència de Materials i Estructures en l'Enginyeria |
Abstract:
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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. |
Materia(s):
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-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 |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Objeto de conferencia |
Editor:
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Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE)
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