Experimental Analysis of the Dynamics of a Vibration Platform upon Contact with an Elastic Limiter of Oscillations

Abstract

The experimental results of the influence of an elastic vibration limiter on the dynamics of a prototype of a vibrating machine with self-synchronizing unbalanced vibration exciters when excited in the resonant frequency range are presented. The prototype is made according to the scheme of a single-mass vibration machine with plane oscillations of the working body (platform), which are excited by two unbalanced asynchronous vibration exciters. The vibration amplitudes of the platform and the mutual phase of rotation of the vibration exciters as a function of excitation frequency were obtained for various weights of the loads installed on the platform. It is shown that contact with an elastic limiter leads to an expansion of the frequency range in which synchronous rotation of vibration exciters with the required mutual phase is ensured, as well as to a decrease in the resonant frequency ranges of the sensitivity of the vibration amplitudes of the platform to changes in the weight of the system. The results confirm the previous results of theoretical analysis.