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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(Document in English)
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Official URL: http://dx.doi.org/10.1007/978-3-319-67988-4_140
Abstract
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) |
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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) |
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Deposited On: | 14 Feb 2018 16:18 |
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