NDLI: Analyse modale expérimentale d'une structure vibrant dans l'eau en écoulement turbulent

Content Provider	Semantic Scholar
Author	Abassi, K.
Copyright Year	2005
Abstract	Les systemes mecaniques sont soumis a des excitations diverses lors de leur fonctionnement. Selon le type d'excitation, la reponse vibratoire differe aussi. Les excitations telles que les chocs et excitations aleatoires excitent les frequences de resonances. Dans le cas particulier des turbines hydrauliques, les ailettes operant dans l'eau sont soumises a des ecoulements turbulents et a des contraintes mecaniques generant des vibrations pouvant etre amplifiees a la resonance. Ces excitations peuvent nuire a l'etat des ailettes, sujettes a la rupture a cause de l'apparition de fissures, ce qui provoque des relâchements des points de soudures. Ceci se repercute sur la bonne marche de la turbine et peut affecter notablement son rendement energetique.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://espace.etsmtl.ca/362/1/ABASSI_Khaled.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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