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arXiv · 2101.00404

$C^1$ isogeometric spline space for trilinearly parameterized multi-patch volumes

Mario Kapl·Vito Vitrih
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Abstract

We study the space of $C^1$ isogeometric spline functions defined on trilinearly parameterized multi-patch volumes. Amongst others, we present a general framework for the design of the $C^1$ isogeometric spline space and of an associated basis, which is based on the two-patch construction [7], and which works uniformly for any possible multi-patch configuration. The presented method is demonstrated in more detail on the basis of a particular subclass of trilinear multi-patch volumes, namely for the class of trilinearly parameterized multi-patch volumes with exactly one inner edge. For this specific subclass of trivariate multi-patch parameterizations, we further numerically compute the dimension of the resulting $C^1$ isogeometric spline space and use the constructed $C^1$ isogeometric basis functions to numerically explore the approximation properties of the $C^1$ spline space by performing $L^2$ approximation.

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Mario Kapl, Vito Vitrih. 2021-10-04. $C^1$ isogeometric spline space for trilinearly parameterized multi-patch volumes. https://arxiv.org/abs/2101.00404

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