Investigation of the effect of self-resonance of vibration excitation systems

Abstract

Eccentric type dis-balance type vibration excitation systems are analysed in the paper. It is assumed that the dis-balance has an additional degree of freedom. It is shown that resonance vibrations in such systems can occur in the regime of self-resonance which is understood as a mode of motion when the driving shaft's angular frequency is high, but the generated vibration frequency is relatively low . Experimental investigations of the effect of self-resonance enabled to define the zones of existence of such motion modes. Such principle of vibration excitation can be successfully exploited in different areas of engineering as it eliminated the necessity of complex and expensive vibration control and stabilisation equipment.

Analytical, numerical, and experimental investigation of self resonance in vibration excitation systems

“…The stability of the systems without control usually is poor; on the other hand the close loop control systems are rather expensive. Another possibility for generating stable resonance vibrations without close loop control systems was found and investigated in number of research reports on nonlinear dynamics 1,2,3,4 . In this study it is shown that resonance vibrations can be excited without adaptation of frequency of forced oscillations -effect of self resonance can be applied for this purpose.…”