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Optimum design sensitivity based on approximation concepts and dual methods
Author(s) -
Schmit L. A.,
Chang K. J.
Publication year - 1984
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620200105
Subject(s) - sensitivity (control systems) , sizing , mathematical optimization , dual (grammatical number) , range (aeronautics) , mathematics , optimal design , computer science , engineering , statistics , art , literature , electronic engineering , visual arts , aerospace engineering
An optimum design sensitivity analysis capability is reported which exploits the approximation concepts‐dual method formulation of the minimum weight structural sizing problem. An efficient iterative solution technique is used to facilitate determination of sensitivity derivatives for both primal and dual variables. Estimates on the useful range of parameter perturbations, over which the optimum design sensitivity projections can be expected to yield satisfactory revised optimum designs, are also obtained. Numerical results for several example problems will be presented to illustrate the effectiveness of the capability reported.