Accurate equilibrium-based interlaminar stress recovery for isogeometric laminated composite Kirchhoff plates

In this paper, we use isogeometric Kirchhoff plates to approximate composite laminates adopting the classical laminate plate theory. Both isogeometric Galerkin and collocation formulations are considered. Within this framework, interlaminar stresses are recovered through an effective post-processing...

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Bibliographic Details
Published in:arXiv.org 2020-07
Main Authors: Patton, Alessia, Antolin, Pablo, John-Eric Dufour, Kiendl, Josef, Reali, Alessandro
Format: Article
Language:English
Subjects:
Galerkin method
Interlaminar stress
Laminar composites
Laminates
Mathematical analysis
Plate theory
Post-processing
Online Access:Get full text
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Summary:In this paper, we use isogeometric Kirchhoff plates to approximate composite laminates adopting the classical laminate plate theory. Both isogeometric Galerkin and collocation formulations are considered. Within this framework, interlaminar stresses are recovered through an effective post-processing technique based on the direct imposition of equilibrium in strong form, relying on the accuracy and the higher continuity typically granted by isogeometric discretizations. The effectiveness of the proposed approach is proven by extensive numerical tests.
ISSN:2331-8422