the fundamental natural frequency of vibration of an inflatable cantilever beam is computed from the system of the three equeations given for vibratory motion of the beam. the effect of various parameters is discussed, and it is shown that, as internal pressure increases, fundamental natural frequency will increase , indicating the stiffening characteristics of internal pressure. a single exper...

Dynamic model of bearing-rotor system is developed considering the collision effects between cage and its guiding land. The modal characteristic vibration response are studied with fourth-order Runge-Kutta method. It demonstrated that whirling motion arising as a result land would induce abnormal frequency components in system’s including multiple well modulation speed natural frequency. Additi...