Bertrand Petitjean

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Aeronautical structures are commonly assembled with bolted joints in which friction phenomena, in combination with slapping in the joint, provide damping on the dynamic behaviour. Some models, mostly non linear, have consequently been developed and the harmonic balance method (HBM) is adapted to compute non linear response functions in the frequency domain.(More)
AIMS To assess retrospectively pancreatic changes in non-alcoholic duct-destructive chronic pancreatitis and to investigate the role of apoptosis in duct destruction. METHODS AND RESULTS Eighteen patients (mean age 46 years, nine women and nine men) underwent pancreatic resection for suspected pancreatic tumour and were diagnosed as having non-alcoholic(More)
Avec le développement d'Internet et d'applications hypermédias, la construction et l'exploitation de profils ou modèles des utilisateurs deviennent capitaux dans de nombreux domaines. Pouvoir cibler un utilisateur d'un hypermédia ou d'un site web afin de lui proposer ce qu'il attend devient essentiel, par exemple lorsque l'on veut lui présenter les produits(More)
In the presented work, a non linear effect of rubber referred as Fletcher-Gent effect or Payne effect is investigated. It leads to a change in the rubber dynamic modulus with vibration amplitudes and, consequently, modifies resonance frequencies of mechanical systems including non linear elastomers. In this study a new methodology is developed to take into(More)
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