This paper describes an experimental procedure about out-of-plane vibrations in rotating uniform Euler-Bernoulli beams with double symmetry in the cross-section. Several theoretical studies have been directed to the evaluation of natural frequencies of rotating structural elements such as space frames, windmill rotors, aircraft propeller, etc. In this research, an experimental procedure capable to overcome the testing limits due to the inference of mechanical coupling with vibrations of hub and driving motor, the rotating transducers requirement, the problems of rubbing electrical contact is offered. Finite element analysis and literature works provide the numerical reference for all the considered laoding and spinning cases.
AN EXPERIMENTAL PROCEDURE FOR THE EVALUATION OF VIBRATION FREQUENCIES OF ROTATING STRUCTURAL ELEMENTS IN MECHANICAL AND AEROSPACE ENGINEERING
SENATORE, ADOLFO;PISATURO, MARIO
2011
Abstract
This paper describes an experimental procedure about out-of-plane vibrations in rotating uniform Euler-Bernoulli beams with double symmetry in the cross-section. Several theoretical studies have been directed to the evaluation of natural frequencies of rotating structural elements such as space frames, windmill rotors, aircraft propeller, etc. In this research, an experimental procedure capable to overcome the testing limits due to the inference of mechanical coupling with vibrations of hub and driving motor, the rotating transducers requirement, the problems of rubbing electrical contact is offered. Finite element analysis and literature works provide the numerical reference for all the considered laoding and spinning cases.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
