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Optimization methodology of composite panels

Carpentier, Alban and Michel, Laurent and Grihon, Stéphane and Barrau, Jean-Jacques Optimization methodology of composite panels. (2006) In: 12th European Conference on Composite Materials (ECCM 12), 29 Aug - 01 Sep 2006, Biarritz, France .

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Abstract

This paper deals with mass optimisation of composite laminates aeronautical structures. It focuses on the final stage of the process of composite structure design i.e. defining the lay-up evolution all over the panel, this being directly used for manufacturing. Strength criteria (in-plane behaviour) and stability criteria (out-of-plane behaviour) performed with appropriate industrial tools are evaluated in the multi-level optimisation presented hereafter. The methodology consists in five steps. In the first two steps, optimisation is performed with continuous variables and a homogenized material (i.e. with approached out of plane properties). In the third step, a lay-up table is selected (or built) and translated into a "continuous" material (i.e. out of plane stiffnesses expressed as continuous variables of the lay-up thickness). In the fourth step, optimisation is performed with the "continuous" material. In the last step, a genetic optimisation is used to round off at discrete ply thicknesses. This methodology provides a manufacturable result (in terms of ply continuity) that satisfies all stress and stacking sequence constraints.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Ecole des Mines d'Albi-Carmaux - EMAC
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Other partners > Airbus (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA
Laboratory name:
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Deposited By: Laurent MICHEL

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