DefinePK

Abstract

This work is aimed at demonstration of considerable transformation of hysteresis in structural damping systems with dry friction in case of vibrator movement pattern type change. A damper ring made of pressure-tested wire material “metal rubber” used for damping of pipelines, turbomachine rotors and engine components of air vehicles was chosen as a survey target for this work. There was elaborated a mathematical model of deformation of “metal rubber” material based on which a model of a damper ring being deformed by a vibrator (a rotor journal) along the ellipse trajectories with a possibility to change smoothly the correlation between the elliptical semi-axes from zero to one was developed. At that the trajectory form is being changed from a straight line to a circular curve and hysteresis in its projections onto the coordinate axes is being transformed from a pattern typical for any structural damping system with peaked vertices to an ellipse-like pattern peculiar to the viscous friction systems.