Doctoral Dissertations

Weihan Zhang

Abstract

"More and more products with complex geometries are being designed and manufactured by computer aided design (CAD) and rapid prototyping (RP) technologies. Freeform surface is a geometrical feature widely used in modern products like car bodies, airfoils and turbine blades as well as in aesthetic artifacts. How to efficiently design and generate digital prototypes with freeform surfaces is an important issue in CAD. This paper presents the development of a Virtual Sculpting system and addresses the issues of surface reconstruction from dexel data structures and freeform geometric modeling using the level-set method from distance field structure. Our virtual sculpting method is based on the metaphor of carving a solid block into a 3D freeform object using a 3D haptic input device integrated with the computer visualization. This dissertation presents the result of the study and consists primarily of four papers"--Abstract, page iv.

Advisor(s)

Leu, M. C. (Ming-Chuan)

Committee Member(s)

Liou, Frank W.
Hilgers, Michael Gene
Landers, Robert G.
Stone, Robert B.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

Ph. D. in Mechanical Engineering

Sponsor(s)

National Science Foundation (U.S.)

Publisher

Missouri University of Science and Technology

Publication Date

Fall 2008

Journal article titles appearing in thesis/dissertation

  • Novel contour generation algorithm for surface reconstruction from dexel data
  • Surface reconstruction using dexel data from three sets of orthogonal rays
  • Virtual sculpting with surface smoothing based on level-set method
  • Spatial warping method for freeform modeling based on level-set method

Pagination

xiv, 148 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2008 Weihan Zhang, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Subject Headings

Curves on surfaces -- Mathematical modelsLevel set methodsRapid prototypingSolid freeform fabricationSurfaces -- Mathematical models

Thesis Number

T 9468

Print OCLC #

367615059

Electronic OCLC #

806040009

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