Composite flywheel rim with co-mingled fiber layers and...

B - Operations – Transporting – 32 – B

Patent

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B32B 15/04 (2006.01) B32B 5/26 (2006.01) D04H 3/07 (2006.01) F16F 15/305 (2006.01)

Patent

CA 2458618

A composite-based rim (100) and methods for manufacturing such a rim are provided. The rim includes muliple fiber-based, co-mingled layers, wherein strength and/or stiffness of the layers increases from the innermost layer of the rim (110) to the outermost layer of the rim (140), but where the radial stress and strain generated in the rim decreases from the innermost layer (110) to the outermost layer (140). Incorporation of this rim into a high stress and strain usage environment, such as a flywheel system, allows the rim to be spun at high speeds in order to generate high levels of kinetic energy while beneficially managing the amount of strain and radial stresses generated within the rim, and, in turn, minimizing or at least controlling the formation and propagation of cracks within the rim.

L'invention concerne une jante (100) à base d'un composite, et des procédés permettant de fabriquer une telle jante. Cette jante comprend plusieurs couches à base de fibres entremêlées, la résistance et/ou la rigidité de ces couches allant en augmentant de la couche la plus à l'intérieur de la jante (110) vers la couche la plus extérieure de la jante (140), mais la tension et la contrainte radiales générées dans la jante décroissant en allant de la couche la plus à l'intérieur (110) vers la couche la plus à l'extérieur (140). Lorsque cette jante est utilisée dans des conditions de tension et de contrainte élevées, par exemple dans un système de volant, elle peut être mise en rotation à des vitesses élevées pour générer des niveaux élevés d'énergie cinétique tout en absorbant de façon bénéfique les contraintes et les tensions radiales auxquelles elle est soumise, la formation et la propagation de fissures dans cette jante étant minimisées ou au moins maîtrisées.

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