Goal-directed geometry: Beyond parametric and variational geometry CAD technologies

David W. Rosen, Wei Chen, Stewart Coulter, Srinivas Vadde

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish (US)
Title of host publication20th Design Automation Conference
Subtitle of host publicationVolume 1 - Dynamic Mechanical Systems; Geometric Modeling and Features; Concurrent Engineering
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages417-426
Number of pages10
ISBN (Electronic)9780791897676
DOIs
StatePublished - 1994
Externally publishedYes
EventASME 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 1994Sep 14 1994

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
VolumePart F167892-6

Conference

ConferenceASME 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
Country/TerritoryUnited States
CityMinneapolis
Period9/11/949/14/94

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Modeling and Simulation

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