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Analyse, modélisation et simulation de la coupe orthogonale du bois vert en vue de son application au fraisage par canter

Abstract : When entering sawmills, logs are faced into cants by the mean of chipper-canters. During this machining, the ribbon produced is split into small chips whose proper valorization is a high economic stake for the industry. The paper maker industry, which is the most worthwhile chips supplier, is strongly concerned by dimensional criterions of the chips for their process optimization, especially toward their thickness. The objective of this work is to improve the comprehension of cutting and fragmentation mechanisms, in a simplified orthogonal cutting configuration, to provide cutting rules to optimize the produced chips geometry. An experimental campaign dedicated to green beech cutting on a computer numerical command machining center is done to study those mechanisms. A simple mechanical model is derived, in order to develop a Discrete Element Method (DEM) model of the material to simulate cutting operations. A preliminary study dedicated to prove the capability of DEM to model a wood-like orthotropic continuous media is presented. The numerical model is then calibrated and cutting simulations are designed to copy the experimental conditions. First results are encouraging.
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https://pastel.archives-ouvertes.fr/tel-02009648
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Submitted on : Wednesday, February 6, 2019 - 2:44:33 PM
Last modification on : Wednesday, September 2, 2020 - 3:23:04 AM
Long-term archiving on: : Tuesday, May 7, 2019 - 1:44:09 PM

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  • HAL Id : tel-02009648, version 1

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Rémi Curti. Analyse, modélisation et simulation de la coupe orthogonale du bois vert en vue de son application au fraisage par canter. Génie mécanique [physics.class-ph]. Ecole nationale supérieure d'arts et métiers - ENSAM, 2018. Français. ⟨NNT : 2018ENAM0034⟩. ⟨tel-02009648⟩

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