Type of Document Dissertation Author Lin, Wenhsyong URN etd-12142006-131840 Title An object-oriented software development environment for geometric modeling in intelligent computer aided design Degree PhD Department Mechanical Engineering Advisory Committee
Advisor Name Title No Advisors Found Keywords
- Geometrical models Data processing
- Computer software Development
- Computer-aided design
Date of Defense 1992-04-15 Availability restricted Abstract
The concept of intelligent CAD systems to assist a designer in automating the design process has been discussed for years. It has been recognized that knowledge engineering techniques and the study of design theory can provide certain solutions to this approach. A major issue in developing intelligent CAD systems for geometric modeling is the integration of the design geometry with the representation of the design constraints.
Current commercial computer aided design (CAD) systems are used primarily for recording the results of the design process. Using conventional CAD systems, a design engineer either must create the geometry of the design object with precise coordinates and dimensions, or start his design from an existing geometry of a previous design. It is difficult to propagate a dimensional change throughout an entire model -- especially solid models. This rigidity imposed by conventional CAD systems discourages a designer from exploring different approaches in creating a novel product.
Filename Size Approximate Download Time (Hours:Minutes:Seconds)
28.8 Modem 56K Modem ISDN (64 Kb) ISDN (128 Kb) Higher-speed Access LD5655.V856_1992.L56.pdf 6.59 Mb 00:30:29 00:15:40 00:13:43 00:06:51 00:00:35next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.
If you have questions or technical problems, please Contact DLA.