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
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
CountryUnited 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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