Parameter Sensitivity Analysis in Two-Level Design Optimization

[+] Author and Article Information
W.-C. Li, S. Azarm

Department of Mechanical Engineering, The University of Maryland, College Park, MD 20242

J. Mech. Des 112(3), 354-361 (Sep 01, 1990) (8 pages) doi:10.1115/1.2912615 History: Received October 01, 1989; Online June 02, 2008


Parameter sensitivity analysis of a two-level design optimization problem can be decomposed into two levels. In the first-level, the sensitivities of the subproblems are calculated separately. In the second-level, the sensitivities obtained for the first-level subproblems are coordinated to obtain the overall sensitivity information. Using this approach, we cannot only obtain the overall effect that a small change in a parameter has on the optimum solution of a problem (or system) but also its local effects on the subproblems (or subsystems). A simple two-bar truss example demonstrates the approach.

Copyright © 1990 by The American Society of Mechanical Engineers
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