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Etude thermomécanique des disques de frein

Etude thermomécanique des disques de frein


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About the Book

Thèse de Doctorat de l'année 2013 dans le domaine Ingénierie - Ingénierie Automobile, University of Oran (Genie Mécanique - Université des Sciences et de la Technologie d'oran Mohamed Boudiaf), cours: Genie Mécanique, langue: Français, résumé L'objet de cette thèse est de présenter une étude du comportement thermomécanique des disques de frein automobiles pour la prédiction de leur tenue en fatigue. La stratégie de calcul numérique est repose sur le code de calcul Ansys v.11. Ce dernier qui est basé sur la méthode des éléments finis et qui possède des algorithmes de gestion du contact avec frottement est utilisé pour simuler dans l'application du freinage le comportement du mécanisme malgré son complexité. Dans un premier temps, est présentée une analyse des phénomènes thermiques opérant dans un disque de frein en service (flux de chaleur généré par frottement, gradients thermiques élevés, élévation de température). Cette modélisation est effectuée en tenant compte l'influence d'un certains nombre de paramètre tel que le type de freinage, le mode de refroidissement, les matériaux de conceptions. Ensuite, une étude purement mécanique du contact sec entre le disque et plaquettes est développée avec une bonne prédiction devient un enjeu majeur pour les industriels tout en modélisant le chargement et les conditions aux limites autours du disque. Nous avons utilisé le même code de calcul pour visualiser les déplacements, les déformations globales dans le disque, les contraintes de cisaillement, les contraintes de Von Mises et les outils de contact des plaquettes tout en effectuant une étude paramétrique telle que ( le module de Young des plaquettes, le coefficient de frottement, le type de chargement, la vitesse de rotation du disque, ..) pour voir sa sensibilité sur les résultats de calcul. Ainsi, les analyses faites sur le comportement thermique et mécanique que de ces prototypes montrent que ces types de solutions technologiques représentent de réelles pistes d'amé


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Product Details
  • ISBN-13: 9783656407966
  • Publisher: Grin Publishing
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Spine Width: 9 mm
  • Weight: 258 gr
  • ISBN-10: 3656407967
  • Publisher Date: 17 Apr 2013
  • Height: 210 mm
  • No of Pages: 152
  • Series Title: French
  • Sub Title: Application du code de calcul ANSYS v11.0
  • Width: 148 mm


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