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SAM : Science Arts et Métiers
Institutional Repository
2049 Publications
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  • Analysis and modeling of green wood milling: Chip production by slabber

    During the primary transformation of wood, logs are faced with slabber heads. Chips produced are raw materials for pulp paper and particleboard industries. Efficiency of these industries is partly due to particle size distribution. Command of this distribution is no easy matter because of great dependence on cutting conditions and variability in material. This study aimed a better understanding and predictionof chip fragmentation. It starts with a detailed description of cutting kinematic and...

    Innovation through pertinent patents research based on physical phenomena involved

    One can find innovative solutions to complex industrial problems by looking for knowledge in patents. Traditional search using keywords in databases of patents has been widely used. Currently, different computational methods that limit human intervention have been developed. We aim to define a method to improve the search for relevant patents in order to solve industrial problems and specifically to deduce evolution opportunities. The non-automatic, semi-automatic, and automatic search met...

    A versatile interface model for thermal conduction phenomena and its numerical implementation by XFEM

    A general interface model is presented for thermal conduction and characterized by two jump relations. The first one expresses that the temperature jump across an interface is proportional to the interfacial average of the normal heat flux while the second one states that the normal heat flux jump is proportional to the surface Laplacian of the interfacial average of the temperature. By varying the two scalar proportionality parameters, not only the Kapitza resistance and highly conducting in...

    Dynamic recrystallization observed at the tool/chip interface in machining

    In numerical approaches for high speed machining, the rheological behavior of machined materials is usually described by a Johnson Cook law. However, studies have shown that dynamic recrystallization phenomena appear during machining in the tool/chip interface. The Johnson Cook constitutive law does not include such phenomena. Thus, specific rheological models based on metallurgy are introduced to consider these dynamic recrystallization phenomena. Two empirical models proposed by Kim et al. ...

    Modélisation des interactions mécaniques outil/matière en FSW

    Pour dimensionner les moyens de production en FSW, il est nécessaire de connaître les efforts résultant de l’interaction mécanique entre l’outil et la matière. Pour cela, un plan d’expériences a été construit et mis en œuvre. Celui-ci permet d’établir des lois statistiques reliant les principaux paramètres de conduite du procédé aux composantes du torseur des actions mécaniques outil/matière que sont le couple de soudage, l’effort d’avance et l’effort transverse. L’étude expérimentale a été m...
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