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Isogeometric analysis enhanced by the scaled boundary finite element method
, JunChao Wang, Chongmin Song, Carolin Birk
Published in Elsevier
2015
Volume: 283
   
Pages: 733 - 762
Abstract
By leveraging the information of a typical CAD model in the analysis, the intensive process of discretization can be circumvented. This unification has led to the 'Isogeometric Analysis' (IGA) (Hughes etal., 2005). However, as the CAD model provides information only of the boundary, a 2D/3D stress analysis is still one major step away. In this work, the concepts of isogeometric analysis and the scaled boundary finite element method (SBFEM) are combined. The SBFEM requires only the boundary information and hence provides a seamless integration with the CAD modeling. Within the proposed framework, the NURBS basis functions are used to discretize the unknown fields in the circumferential direction, whilst analytical solution is sought in the radial direction. We further extend the framework to problems with singularities and to dynamic analysis. The accuracy and the convergence properties of the proposed method are demonstrated with benchmark problems in the context of linear elasticity and linear elastic fracture mechanics. © 2014 Elsevier B.V.
About the journal
JournalData powered by TypesetComputer Methods in Applied Mechanics and Engineering
PublisherData powered by TypesetElsevier
ISSN00457825
Open AccessNo
Concepts (6)
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    Stress intensity factors
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    ISOGEOMETRIC ANALYSIS
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    LAGRANGE FUNCTIONS
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    NURBS
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    SCALED BOUNDARY FINITE ELEMENT METHOD
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    Dynamic analysis