Title page for ETD etd-10072005-094859
|Type of Document
||Houser, Scott A.
||Medial surface transformations for rapid approximation of casting solidification
||Master of Science
|Bohn, Jan Helge
|Deisenroth, Michael P.
|Date of Defense
This thesis demonstrates the feasibility of using a medial surface transformation as a tool
to rapidly approximate the solidification patterns of convex faceted solid models of
castings. The medial surface transformation is used to automate the greatest included
sphere approach to solidification pattern approximation. The experimental software of
this thesis extracts the medial surface transformation from a convex faceted model by
computing the model's Voronoi diagram and uses it to identify casting hot spots and
cooling patterns. Comparison with a finite difference method (FDM) solution showed that
the locations and shapes of hot spots predicted by FDM converge to the shapes and
locations predicted by the experimental software.
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