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A Bilevel Methodology for solving a Structural Optimization Problem with both Continuous and Categorical Variables

Barjhoux, Pierre-Jean and Diouane, Youssef and Grihon, Stéphane and Bettebghor, Dimitri and Morlier, Joseph A Bilevel Methodology for solving a Structural Optimization Problem with both Continuous and Categorical Variables. (2018) In: 2018 Multidisciplinary Analysis and Optimization Conference, AIAA AVIATION Forum, 25 June 2018 - 29 June 2018 (Atlanta, Georgia, United States).

(Document in English)

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Official URL: http://dx.doi.org/10.2514/6.2018-3579


In industrial structural optimization problems, two kinds of variables are involved : continuous variables, like geometrical parameters, and categorical variables like choices of material and cross-sectional shapes. A key difficulty of this kind of problem is the sensitivity of the computation cost with respect to the number of categorical design variables. In this article, a new methodology is proposed to address this mixed continuous-categorical structural optimization problem. For this purpose, a 10-bar truss test case representative for industrial design is introduced. Promising results have been obtained in terms of computation cost, compared to approaches based on combinatorial algorithms.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-01851977
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:31 Jul 2018 11:23

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