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Analyse des vibrations d'un élément de roulement défectueux

Analyse des vibrations d'un élément de roulement défectueux


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About the Book

Les équipements rotatifs purs se trouvent le plus souvent dans les systèmes mécaniques, qui sont soumis à des forces externes indésirables, principalement dues au déséquilibre du rotor et au désalignement des arbres. Ces forces excitent le système et provoquent des vibrations indésirables. Ces vibrations peuvent endommager les roulements, ce qui constitue une menace sérieuse pour la durée de vie et le fonctionnement de la machine. Ces dommages, s'ils ne sont pas identifiés et contrôlés, conduisent à une défaillance catastrophique du roulement et à une défaillance du système bien avant la durée de vie prévue. Les vibrations se produisent généralement à la fréquence de fonctionnement de la machine, mais parfois des harmoniques plus élevées sont également excitées. Le présent travail est une tentative d'étudier les caractéristiques vibratoires d'un système mécanique rotatif, qui a un roulement endommagé monté sur un arbre en porte-à-faux. Les signaux vibratoires sont acquis à l'aide d'un accéléromètre monté sur l'un des paliers. L'analyse FFT des données acquises a révélé la réponse en régime permanent du roulement sain et endommagé dans des conditions de fonctionnement. Le test du marteau d'impact a montré les fréquences naturelles pour différentes longueurs d'arbre en porte-à-faux.


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Product Details
  • ISBN-13: 9786203600049
  • Publisher: KS Omniscriptum Publishing
  • Publisher Imprint: Editions Notre Savoir
  • Height: 229 mm
  • No of Pages: 64
  • Spine Width: 4 mm
  • Width: 152 mm
  • ISBN-10: 6203600040
  • Publisher Date: 06 Apr 2021
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Weight: 159 gr


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