In this paper, two kinds of vibrations are considered for a composite Timoshenko rotor: longitudinal-torsional vibration and two plane transverse one. The kinetic and potential energies and virtual work due to the gyroscopic effects are calculated and the set of six governing equations and boundary conditions are derived using Hamilton principle. Differential quadrature method (DQM) is used as ...

The calibration of vibration and acceleration pick-ups (hereinafter pick-ups) has become increasingly important due to the growing needs for accurate measurements of vibration and acceleration. To date, there is no official standard for calibration of the pick-ups in the middle to high vibration frequency rage (80 Hz ~ 5 kHz) in Japan. Thus the reliability of the vibration and acceleration meas...