AUDOUX, Yohann; MONTEMURRO, Marco; PAILHES, Jerome

doi:10.1016/j.compstruct.2020.112439

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

AUDOUX, Yohann
Institut de Mécanique et d'Ingénierie [I2M]

MONTEMURRO, Marco

Institut de Mécanique et d'Ingénierie [I2M]

PAILHES, Jerome

Institut de Mécanique et d'Ingénierie [I2M]

Langue

Article de revue

Ce document a été publié dans

Composite Structures. 2020-09, vol. 247, p. 1-12

Elsevier

Résumé en anglais

This study presents a new strategy to generate a surrogate model used for design purposes. The metamodel is based on Non-Uniform Rational Basis Spline (NURBS) hyper-surfaces and is able to fit non-convex sets of target points (TPs). The proposed method aims at determining all the parameters involved in the definition of the NURBS hyper-surface, i.e. control points (CPs) coordinates, weights, degrees, CPs number and knot-vector components. To this purpose, the problem of finding a suitable metamodel is formulated as a constrained non-linear programming problem (CNLPP) wherein the above variables are optimised in order to fit a set of TPs. Nevertheless, when the number of CPs and the degrees of the basis functions are included among the design variables, the resulting problem is defined over a space having a variable dimension. This problem is solved by means of a special genetic algorithm able to determine simultaneously the optimum value of both the design space size (related to the integer variables of the NURBS hyper-surface) and the NURBS hyper-surface continuous parameters. The NURBS-based metamodel is then used to emulate the first buckling load of a composite stiffened panel and it is used in the framework of a meaningful design problem.< Réduire

Mots clés en anglais

Optimisation

Genetic algorithms

NURBS hyper-surfaces

Surrogate models

Stiffened panels

Composite structures

Métadonnées

Partager cette publication !

Licence d’utilisation du document

A metamodel based on non-uniform rational basis spline hyper-surfaces for optimisation of composite structures

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

URI

DOI

Origine

Unités de recherche