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- Title
Étude numérique de l'influence de la vitesse d'impact sur la résistance des pales d'hélicoptères à des impacts rasants.
- Authors
Aubry, J.; Navarro, P.; Marguet, S.; Ferrero, J.-F.; Tawk, I.; Lemaire, S.; Rauch, P.
- Abstract
In aeronautics, passenger safety and reliability of structures are essential aspects. For the specific case of helicopters, blades are subjected to impact solicitations. Modelling these phenomena is still difficult and experimental tests often replace the prediction. This work will be focused on the experimental and numerical study of an oblique impact on the skin of the blade. It is equivalent in a first approach to an impact on a sandwich panel made up with a foam core and a thin woven composite skin. The objectives are to identify the mechanisms of damage in the skin for this kind of solicitation for various impact velocities. Thus, an F.E. explicit model has been developed. It relies on the development of a specific damageable element at the bundles scale. Numerical results obtained are correct compared to the experimental study and allow the identification of the damage mechanism of the woven skin.
- Subjects
ROTORS (Helicopters); OBLIQUE wing airplanes; AIR travelers; SANDWICH construction (Materials); WOVEN composites
- Publication
Matériaux et Techniques, 2012, Vol 100, Issue 6-7, p713
- ISSN
0032-6895
- Publication type
Article
- DOI
10.1051/mattech/2012036