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Méthode d'optimisation et d'aide à la décision en conception mécanique : Application à une structure aéronautique

Arnaud Collignan 1
1 IMC
I2M - Institut de Mécanique et d'Ingénierie de Bordeaux
Abstract : In product design, the design phase called "embodiment design" results to define solutions describing main product characteristics, such as dimensions or standard components. Among numerous candidate solutions, it is necessary to select and to rigorously justify the selection. This choice must often take into account preexisting reference solutions, coming from previous projects or preliminary studies. In this context, our works propose a decision support method aiming to select a design solution; it is called OIA method (Observation-Interpretation-Aggregation). This approach uses two types of model, the first one concerns the objective behavior of the product (Observation), the second one concerns the designer's subjective preferences (Interpretation). In these preference several indicators are introduced: expected product behaviors, designer's satisfactions and usual compromises realized through design activity. These compromises are achieved through design strategies and weighting approaches (Aggregation). The OIA method is first used to qualify design solutions though the performance indicator. This method is then used to qualify design solutions related to the reference one, through the confidence indicator. The arc-elasticity is finally introduced as a compromise indicator between performance and confidence. Several stochastic optimization algorithms are compared to compute optimal solutions. Theses algorithms are investigated and compared using three criteria, and a multicriteria selection method is proposed to identify the most suitable one. This work is applied to the dimensioning of a riveted junction in an industrial context.
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Submitted on : Monday, January 23, 2012 - 4:40:14 PM
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  • HAL Id : tel-00662303, version 1

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Arnaud Collignan. Méthode d'optimisation et d'aide à la décision en conception mécanique : Application à une structure aéronautique. Mécanique [physics.med-ph]. Université Sciences et Technologies - Bordeaux I, 2011. Français. ⟨tel-00662303⟩

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