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RESEARCH PAPERS: Design Automation

Collaborative Optimization of Systems Involving Discrete Design at the Discipline Level

[+] Author and Article Information
R. J. Balling, D. L Gale

Department of Civil and Environmental Engineering, Brigham Young University, Provo, UT 84602

J. Mech. Des 120(1), 32-39 (Mar 01, 1998) (8 pages) doi:10.1115/1.2826673 History: Received April 01, 1997; Online December 11, 2007

Abstract

The multidisciplinary design optimization technique known as collaborative optimization is applied to two example problems to illustrate the flexibility that the technique extends to disciplinary design teams. In the first problem, disciplinary design variables are discrete-valued representing the cross-sectional dimensions of standardized shapes for structural members in a frame. In the second problem, discrete disciplinary design variables are used to represent the choice between different structural configurations of a truss tower. In both problems, disciplinary design was performed by the non-gradient-based strategy, exhaustive search. Nevertheless, system-level optimization was performed by a gradient-based strategy using simple formulas for the necessary gradients.

Copyright © 1998 by The American Society of Mechanical Engineers
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