Michel Bercovier & Tanya Matskewich 
Smooth Bézier Surfaces over Unstructured Quadrilateral Meshes [PDF ebook] 

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Using an elegant mixture of geometry, graph theory and linear analysis, this monograph completely solves a problem lying at the interface of Isogeometric Analysis (Ig A) and Finite Element Methods (FEM). The recent explosion of Ig A, strongly tying Computer Aided Geometry Design to Analysis, does not easily apply to the rich variety of complex shapes that engineers have to design and analyse. Therefore new developments have studied the extension of Ig A to unstructured unions of meshes, similar to those one can find in FEM. The following problem arises: given an unstructured planar quadrilateral mesh, construct a C1-surface, by piecewise Bézier or B-Spline patches defined over this mesh. This problem is solved for C1-surfaces defined over plane bilinear Bézier patches, the corresponding results for B-Splines then being simple consequences. The method can be extended to higher-order quadrilaterals and even to three dimensions, and the most recent developments in this direction are also mentioned here.

 

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Tabella dei contenuti

Introduction.- G1-smooth Surfaces.- C1 smooth surfaces.- MDSs: quadrilateral meshes.- Global MDSs.- MDSs for a smooth boundary.- Computational examples.- Conclusions.- Two-patch geometry and the G1 construction.- Illustrations for the thin plate problem.- Mixed MDSs of degrees 4 and 5.- Technical lemmas.- Minimisation problems.- G1 is equivalent to C1.- Bibliography.- References.

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Lingua Inglese ● Formato PDF ● Pagine 192 ● ISBN 9783319638416 ● Dimensione 4.8 MB ● Casa editrice Springer International Publishing ● Città Cham ● Paese CH ● Pubblicato 2017 ● Scaricabile 24 mesi ● Moneta EUR ● ID 5235715 ● Protezione dalla copia DRM sociale

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