NURBS Surface Reparameterization Using Truncated T-splines
Liu, Lei, Yongjie Jessica Zhang, Xiaodong Wei
23rd International Meshing Roundtable, Elsevier Ltd., pp.Research Note, October 12-15 2014
23rd International Meshing Roundtable
Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
Constructing T-splines for isogeometric analysis is an important step in inte- grating designing
and analysis . However, only a restricted type of T-splines is analysis-suitable, such as a
subset of standard T-splines with constrains on the configuration of T-mesh . Designed CAD
models are not water-tight, and the control points are sparse. In addition, various operations
result in trimmed NURBS patches, such as union, intersection, trimming and splitting (Fig. 1).
These patches do not have tensor product representation in the trim- ming result. These limits
the direct usage of CAD models for analysis. How to reparameterize designed CAD models with
analysis-suitalbe T-splines is still an open problem.
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