Adaptive local surface refinement based on LR NURBS and its application to contact

@article{Zimmermann2017AdaptiveLS,
  title={Adaptive local surface refinement based on LR NURBS and its application to contact},
  author={Christopher Zimmermann and Roger A. Sauer},
  journal={Computational Mechanics},
  year={2017},
  volume={60},
  pages={1011-1031}
}
A novel adaptive local surface refinement technique based on Locally Refined Non-Uniform Rational B-Splines (LR NURBS) is presented. LR NURBS can model complex geometries exactly and are the rational extension of LR B-splines. The local representation of the parameter space overcomes the drawback of non-existent local refinement in standard NURBS-based isogeometric analysis. For a convenient embedding into general finite element codes, the Bézier extraction operator for LR NURBS is formulated… 

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