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Optimisation des procédés de mise en forme par approche couplée plans d'expériences, éléments finis et surface de réponse

Abstract : In this work we propose the optimization strategies using numerical designs of experiments to minimize the difficulties in the metal forming process optimization. Among these difficulties it can recall : springback from bending process, die wear during extrusion process or tools fatigue, the research of global solution for data exchange between numerical simulation and optimization tool. Taking into account of the strong non-linearity of the studied phenomena, we developed an approach using the following methods, design of experiments, finite elements methods and response surface methodology to optimize the performances of the product or manufacturing process The virtual character of the experiments (numerical simulation) justifies creation and the development of an optimization tool, in order to automate and to facilitate the application of the designs of experiments method and that of the strategies of optimization by designs of experiments from numerical simulations. This is a data-processing tool which determines in an automatic and fast way, the optimum of a certain process and allows obtaining products that respect a certain number of quality standards. In order to find the characteristics of the manufacturing processes in agreement with the best possible quality of the products one of the optimization strategies proposed in this work is based on a hybrid approach which uses the power of the three methods : mechanical tolerancing, response surface methodology, and interval computation method. The validation of this new method will bring a robust solution of the stamping process optimization.
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Submitted on : Thursday, November 13, 2008 - 10:46:38 AM
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  • HAL Id : tel-00338415, version 1

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Daniel Lepadatu. Optimisation des procédés de mise en forme par approche couplée plans d'expériences, éléments finis et surface de réponse. Sciences de l'ingénieur [physics]. Université d'Angers, 2006. Français. ⟨tel-00338415⟩

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