Multiscale analysis of complex aeronautical structures using robust non-intrusive coupling

Abstract : The multiscale analysis of large composite aeronautical structures involves the development of robust coupling strategies. Among the latter, non-intrusive coupling is attractive, since it is able to consistently connect a global simplified linear model to a local detailed one, using features available in commercial software. Up to now, such coupling methods were still limited to academic situations where global and local meshes are geometrically and/or topologically conforming and of low geometric complexity. To meet the goal of merging a complex non-planar global shell to a local detailed 3D model, an extension of these techniques is proposed to handle meshes of complex shapes that are not only non-matching but also geometrically and topologically non-conforming. The implemented strategy is original and robust: the innovative nature of the approach is to expand the initial local solid model by generating transitional shell meshing. The generated model incorporates two distinct coupling interfaces: (i) non-intrusive global–local coupling and (ii) shell–solid coupling. The multiscale strategy was successfully validated through different numerical experiments using standard Input/Output of a commercial finite element software. In particular, a representative use-case involving a realistic fuselage section of an aircraft was computed.
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https://hal.archives-ouvertes.fr/hal-01807939
Contributor : Jean-Charles Passieux <>
Submitted on : Tuesday, June 5, 2018 - 12:48:29 PM
Last modification on : Friday, January 10, 2020 - 9:09:45 PM
Long-term archiving on: Thursday, September 6, 2018 - 3:01:10 PM

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Stéphane Guinard, Robin Bouclier, Mateus Toniolli, Jean-Charles Passieux. Multiscale analysis of complex aeronautical structures using robust non-intrusive coupling. Advanced Modeling and Simulation in Engineering Sciences, SpringerOpen, 2018, 5 (1), pp.1. ⟨10.1186/s40323-017-0094-z⟩. ⟨hal-01807939⟩

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