Abstract
Improved computer-aided design tools can significantly impact designer productivity. The ability to formulate and solve "What if* questions is critical in early design stages. In this paper, a new computational framework for preliminary design, called Goal-Directed Geometry, is presented that provides such an exploratory environment for early stages. Tools for parametric geometry, variational modeling, and feature-based design are combined with a multiobjective optimization code to provide robust support for parametric design problems, where parameter values are desired that best meet a set of goals and constraints. Geometric and engineering models of a design are combined into a multiobjective optimization formulation called a Compromise Decision Support Problem, which can be solved by the existing package DSIDES (Decision Support In the Design of Engineering Systems). A prototype CAD system is under development that integrates DSIDES, a geometric modeler, and variational, parametric, and feature capabilities. The system aids a designer in evaluating competing alternatives, common during preliminary design, and in answering "What if' types of questions. Two examples illustrate the use of Goal-Directed Geometry in formulating and solving parametric design problems involving engineering and geometric constraints and goals.
Original language | English (US) |
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Title of host publication | 20th Design Automation Conference |
Subtitle of host publication | Volume 1 - Dynamic Mechanical Systems; Geometric Modeling and Features; Concurrent Engineering |
Publisher | American Society of Mechanical Engineers (ASME) |
Pages | 417-426 |
Number of pages | 10 |
ISBN (Electronic) | 9780791897676 |
DOIs | |
State | Published - 1994 |
Event | ASME 1994 Design Technical Conferences, DETC 1994, collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium - Minneapolis, United States Duration: Sep 11 1994 → Sep 14 1994 |
Publication series
Name | Proceedings of the ASME Design Engineering Technical Conference |
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Volume | Part F167892-6 |
Conference
Conference | ASME 1994 Design Technical Conferences, DETC 1994, collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium |
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Country/Territory | United States |
City | Minneapolis |
Period | 9/11/94 → 9/14/94 |
Funding
We gratefully acknowledge the George W. Woodruff School of Mechanical Engineering at Georgia Tech for supporting Wei Chen and Stewart Coulter. Also, Srinivas Vadde has been supported on the NSF grant DDM-93-96503. Thanks go to the Engineering Design Research Center at Carnegie Mellon for the use of their Noodles geometric modeler.
ASJC Scopus subject areas
- Mechanical Engineering
- Computer Graphics and Computer-Aided Design
- Computer Science Applications
- Modeling and Simulation