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Genetic optimization of stiffened plates without the FE mesh support
Author(s) -
Marcelin J. L.
Publication year - 2002
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.446
Subject(s) - deflection (physics) , finite element method , genetic algorithm , structural engineering , ritz method , engineering , mathematical optimization , computer science , mathematics , mathematical analysis , physics , optics , boundary value problem
This paper deals with the optimization of beam stiffeners on plates by varying their positions in order to minimize the maximum deflection of the plate. Genetic algorithms are used. The research strategy consists in substituting, for finite element calculations in the optimization process, an approximate response of a neural network, or an approximate response from a Ritz method. This paper shows how it is possible to deal with more important problems and to envisage more general baseline design for stiffened plates by adding the orientation angle of each stiffener as a design variable. This paper also shows how one can free oneself from the FE mesh, i.e. how one no longer needs the support of the mesh for the stiffeners. Copyright © 2002 John Wiley & Sons, Ltd.