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Décomposition avancée de modèles numériques CAO pour le procédé de Stratoconception : développement des outils associés

Abstract : Stratoconception is a rapid prototyping process. It allows the direct manufacturing of a CAD model, layer after layer. This process consists in breaking the part down, by computing, into a set of straightforward elementary layers called stratum, in which stiffeners and strengthening plugs are inserted. The elementary parts are identified and then directly manufactured by rapid milling from sheet material. These elementary parts are the fitted together and imbricated in order to rebuild the final part. A lot of work was published about decomposition of model. At the beginning, the entities were used in the context of machining (of plane, cylinder,...). Nowadays, the decomposition is applied in the field of multimedia vizualisation, similarities recognition or conception of new models by using atabase of existing models. In Stratoconception, we identify three types of decomposition, each of one responding to specific problem : decomposition in strata, pieces of strata and entities. Each of these decomposition solves accessibility, reduction of model's size and speed up of manufacturing time problems. We work more specifically on the optimization of slicing procedure by using critical points ans on the manufacturing of tubular models by using parting line. We also study the decompposition of model into nearly convex entities.
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https://hal.univ-lorraine.fr/tel-01748256
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Yves Houtmann. Décomposition avancée de modèles numériques CAO pour le procédé de Stratoconception : développement des outils associés. Autre. Université Henri Poincaré - Nancy 1, 2007. Français. ⟨NNT : 2007NAN10100⟩. ⟨tel-01748256⟩

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