A mechanically consistent model for fluid-structure interactions with contact including seepage
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Computer Methods in Applied Mechanics and Engineering. Elsevier. 2021, 392, 114637. ISSN 0045-7825. eISSN 1879-2138. Available under: doi: 10.1016/j.cma.2022.114637
Zusammenfassung
s.We present a new approach for the mechanically consistent modelling and simulation of fluid–structure interactions (FSI) with contact. The fundamental idea consists of combining a relaxation of the contact conditions with the modelling of seepage through a porous layer of co-dimension one during contact. For the latter, a Darcy model is considered in a thin porous layer attached to a solid boundary in the limit of infinitesimal thickness. The resulting computational model is both mechanically consistent and simple to implement. The FSI coupling and the contact conditions are imposed weakly by means of a unified Nitsche approach. We analyse the approach in detailed numerical studies with both thick- and thin-walled solids, within a fully Eulerian and an immersed approach and using fitted and unfitted finite element discretisations.
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BURMAN, Erik, Miguel A. FERNÁNDEZ, Stefan FREI, Fannie M. GEROSA, 2021. A mechanically consistent model for fluid-structure interactions with contact including seepage. In: Computer Methods in Applied Mechanics and Engineering. Elsevier. 2021, 392, 114637. ISSN 0045-7825. eISSN 1879-2138. Available under: doi: 10.1016/j.cma.2022.114637BibTex
@article{Burman2021mecha-55626.2,
year={2021},
doi={10.1016/j.cma.2022.114637},
title={A mechanically consistent model for fluid-structure interactions with contact including seepage},
volume={392},
issn={0045-7825},
journal={Computer Methods in Applied Mechanics and Engineering},
author={Burman, Erik and Fernández, Miguel A. and Frei, Stefan and Gerosa, Fannie M.},
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<dcterms:abstract xml:lang="eng">s.We present a new approach for the mechanically consistent modelling and simulation of fluid–structure interactions (FSI) with contact. The fundamental idea consists of combining a relaxation of the contact conditions with the modelling of seepage through a porous layer of co-dimension one during contact. For the latter, a Darcy model is considered in a thin porous layer attached to a solid boundary in the limit of infinitesimal thickness. The resulting computational model is both mechanically consistent and simple to implement. The FSI coupling and the contact conditions are imposed weakly by means of a unified Nitsche approach. We analyse the approach in detailed numerical studies with both thick- and thin-walled solids, within a fully Eulerian and an immersed approach and using fitted and unfitted finite element discretisations.</dcterms:abstract>
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