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Blended isogeometric shells
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DOI：10.1016/j.cma.2012.11.020.png)
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Abstract
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We propose a new isogeometric shell formulation that blends Kirchhoff-Love theory with Reissner-Mindlin theory. This enables us to reduce the size of equation systems by eliminating rotational degrees of freedom while simultaneously providing a general and effective treatment of kinematic constraints engendered by shell intersections, folds, boundary conditions, the merging of NURBS patches, etc. We illustrate the blended theory's performance on a series of test problems. (C) 2012 Elsevier B.V. All rights reserved.
Keywords:
Isogeometric analysis
NURBS
Shells
Rotation-free
Nonlinear
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