Recent Trends in Applied Nonlinear Mechanics and Physics by Mohamed Belhaq

Author:Mohamed Belhaq
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

The effect of system rotation velocity and expected beam centrifugal stiffening is demonstrated in Fig. 7.4. The analysis has been performed for the fixed excitation frequency and amplitude , and the varied component. Studying the plot (b) one observes the increasing magnitude results in higher angular hub velocities. The relation is almost linear with just a small perturbation around . The increased angular speed makes the beam stiffer therefore the resonance zone is shifted and blade response amplitude is decreased (Fig. 7.4a). For the analysed case beam oscillations are almost fully suppressed if .

Fig. 7.5The linear beam model forced by the torque ; resonance curves of (a) maximal beam displacement and (b) hub angular velocity ; –black, –blue; ,

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