"Functionally Gradient Materials (FGMs) feature smooth transition from one material to another within a single object. FGMs modeling is considered to be one of the new challenges in Computer Aided Design (CAD) area. To overcome this challenge, this thesis presents a composite approach to model FGMs. The input in STL format can be meshed and voxelized in FGMs modeling system. The material composition in each voxel can be generated from multiple different types of control features. And LTI filters including Gaussian Filter and Average Filter are applied to blur default material features in order to generate FGMs inside models. The LTI filtering method gives an effective and controllable approach to distribute material composition in FGMs area. Forbidden zone mapping function is also proposed in this thesis to actively eliminate the forbidden zone in FGMs modeling. Unwanted material composition can be effectively removed from the modeling process while the original material transition trend is preserved. At last, Erosion Function is introduced in the thesis to generate FGMs area between outer portion and inner portion of an object. Material composition contour level map is generated to help the tool path plan for Additive Manufacturing (AM)"--Abstract, page iii.
Liou, Frank W.
Leu, M. C. (Ming-Chuan)
Mechanical and Aerospace Engineering
M.S. in Manufacturing Engineering
Missouri University of Science and Technology
vii, 40 pages
© 2016 Fangquan Wang, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Functionally gradient materials
Composite materials -- Computer simulation
Electronic OCLC #
Wang, Fangquan, "Composite model representation for Computer Aided Design of Functionally Gradient Materials" (2016). Masters Theses. 7573.