Design of hybrid high modulus/high resistance carbon fibers driveshafts ―- Subcritical and supercritical solutions
Résumé
This work deals with the sizing of supercritical laminated composite drive shaft. First part presents the dynamic study of a simply supported composite drive shaft mounted on viscoelastic supports. This study reveals a stability criterion, which highlights the destabilizing effect of internal hysteretic damping. Second part discussed about the tube strength in torsion (buckling of thin walled tubes; torsional strength). Lastly, it is proposed to realize a comparative study of hybrid high modulus/high resistance carbon fibers solutions to high resistance or high modulus solutions. This study reveals the interest of hybrid solutions and highlights a simple solution constituted by 0° and 90° plies in high modulus carbon and +45°/-45° plies in high resistance carbon. This solution is also valid for subcritical solutions.