• Post-buckling optimization of...

Treffer: Post-buckling optimization of composite stiffened panels : Computations and experiments

Title:
Post-buckling optimization of composite stiffened panels : Computations and experiments
Authors:
LANZI, Luca, GIAVOTTO, Vittorio
Source:
International conference on buckling and postbuckling behavior of composite laminated shell structures, Eilat, 1-2 March 2004Composite structures. 73(2):208-220
Publisher Information:
Oxford: Elsevier Science, 2006.
Publication Year:
2006
Physical Description:
print, 36 ref
Original Material:
INIST-CNRS
Subject Terms:
Mechanics acoustics, Mécanique et acoustique, Sciences exactes et technologie, Exact sciences and technology, Physique, Physics, Domaines classiques de la physique (y compris les applications), Fundamental areas of phenomenology (including applications), Mécanique des solides, Solid mechanics, Mécanique des structures et des milieux continus, Structural and continuum mechanics, Flambage, Buckling, Sciences appliquees, Applied sciences, Industrie des polymeres, peintures, bois, Polymer industry, paints, wood, Technologie des polymères, Technology of polymers, Formes d'application et semiproduits, Forms of application and semi-finished materials, Matériaux composites, Composites, Algorithme génétique, Genetic algorithm, Algoritmo genético, Charge critique, Critical load, Carga crítica, Coque renforcée, Reinforced shell, Cascarón reforzado, Défaut, Defect, Defecto, Etude expérimentale, Experimental study, Estudio experimental, Flambage, Buckling, Pandeo, Fonction base radiale, Radial basis function, Función radial base, Krigeage, Kriging, Méthode optimisation, Optimization method, Método optimización, Optimisation, Optimization, Optimización, Optimum global, Global optimum, Optimo global, Postflambage, Postbuckling, Post-pandeo, Processus conception, Design process, Proceso concepcion, Programmation multiobjectif, Multiobjective programming, Programación multiobjetivo, Propriété mécanique, Mechanical properties, Propiedad mecánica, Réseau neuronal, Neural network, Red neuronal, Structure renforcée, Reinforced structure, Estructura reforzada, Surface réponse, Response surface, Superficie respuesta, Composite stiffened panels, Genetic Algorithm, Global approximation, Post-buckling
Document Type:
Konferenz Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Dipartimento di Ingegneria Aerospaziale, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy
ISSN:
0263-8223
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=17709904
Rights:
Copyright 2006 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Physics: solid mechanics

Polymer industry, paints, wood
Accession Number:
edscal.17709904
Database:
PASCAL Archive

Weitere Informationen

A multi-objective optimization procedure for the design of composite stiffened panels capable to operate in post-buckling is presented. The procedure is based on Genetic Algorithms and three different methods of global optimization: Neural Networks, Radial Basis Functions and Kriging approximation. Response surfaces are used to approximate the post-buckling behaviour of the panels using a limited number of sample points. Optimization results underline the significance of non-dominated solutions, as the best panel configurations inside the domain of interest. Finally, one of the non-dominated solutions is selected, manufactured and tested up to collapse. The analyses, performed a priori without considering any kind of imperfection, are closed and in good agreement with the tests in terms of pre-buckling and post-buckling stiffness, as well as in terms of collapse loads. The introduction of imperfections reduced the percentage errors between computations and tests within 5% in so far as buckling and collapse loads are concerned. The obtained results prove the influence of the initial imperfections not only on the first-buckling load but also in the post-buckling range up to collapse.