24th International Meshing Roundtable
Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
To generate analysis-suitable T-splines for arbitrary topologies, in this paper we introduce a new method to deal with extraordinary
nodes in the T-mesh. Knot interval duplication method is used to extract knot vectors for the extraordinary nodes and spoke nodes.
From defined bicubic weighted T-spline basis functions, the extracted Bezier coefficients are modified to obtain a gap-free T-spline
surface. The boundaries shared by the first-ring neighboring Bezier elements are C0-continuous. Then we use biquartic Bezier
basis functions with optimized coefficients to increase the surface continuity to G1. Comparison with other methods shows that our
method generates T-spline surfaces with better surface continuity for analysis.
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