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Mixed Variable Structural Optimization: Toward an Efficient Hybrid Algorithm

Barjhoux, Pierre-Jean and Diouane, Youssef and Grihon, Stéphane and Bettebghor, Dimitri and Morlier, Joseph Mixed Variable Structural Optimization: Toward an Efficient Hybrid Algorithm. (2017) In: 12th World Congress on Structural and Multidisciplinary Optimisation, 5 June 2017 - 9 June 2017 (Braunschweig, Germany).

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Official URL: http://dx.doi.org/10.1007/978-3-319-67988-4_140


Designing a structure implies a selection of optimal concept and sizing, with the aim of minimizing the weight and/or production cost. In general, a structural optimization problem involves both continuous variables (e.g., geometrical variables, ...) and categorical ones (e.g., materials, stiffener types, ...). Such a problem belongs to the class of mixed-integer nonlinear programming (MINLP) problems. In this paper, we specifically consider a subclass of structural optimization problems where the categorical variables set is non-ordered. To facilitate categorical variables handling, design catalogs are introduced as a generalization of the stacking guide used for composite optimization. From these catalogs, a decomposition of the MINLP problem is proposed, and solved through a branch and bound method. This methodology is tested on a 10 bars truss optimization inspired from an aircraft design problem, consistent with the level of complexity faced in the industry.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-01828682
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Airbus (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > IRT Saint Exupéry - Institut de Recherche Technologique (FRANCE)
Laboratory name:
Deposited On:14 Feb 2018 16:18

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