Abstract: In order to study the vibrational behavior of laminated annular plates, and effects of laminations on the vibrations of the plates, the vibrations of a series of solid annular plates are calculated by using the finite element method to obtain reference for comparison with experimental data. An extensive range of experiments is performed on both a series of solid plates and a series of laminated plates under a range of normal clamping pressures. Based on the calculated and experimental results, it is found that vibrational behavior of the laminated plates is dominated by that of the individual plate, of which the laminated plates are composed. However, laminations have great effects on the vibrational behavior of the laminated plates, and the effects depend upon the mode type, the clamping pressure and the number of plate assembly. With increasing of the numbers of laminations and increasing of the claming pressure, the longitudinal vibration modes vanish quickly, and only the in-plane modes persist and dominate the vibrations of laminated annular plates.

Key words: Effects of laminations, In-plane modes, Laminated annular plates, Longitudinal vibration modes, double pendulum head five axis machine tool, java, Non Modal, post processing, rotation angle