Title page for ETD etd-10072005-094859

Type of Document Master's Thesis
Author Houser, Scott A.
URN etd-10072005-094859
Title Medial surface transformations for rapid approximation of casting solidification
Degree Master of Science
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Bohn, Jan Helge Committee Chair
Deisenroth, Michael P. Committee Member
Myklebust, Arvid Committee Member
  • measurement instruments
Date of Defense 1996-07-05
Availability restricted

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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