Vibration analysis of elevator rope with one vibration suppressor

Abstract

The lateral vibration of elevator ropes for high-rise building, which is excited forcibly by the displacements of the building induced by wind forces, is numerically analyzed, and a new practical method for reducing the rope vibration by using vibration suppressor is proposed for relaxing the restricted elevator operation. Finite difference analyses of the rope vibration with/without vibration suppressor are performed. The advantage of using the vibration suppressors for reducing the rope lateral vibration is demonstrated through the numerical calculation : The resonant position of the rope with vibration suppressor is greatly depends on the position of the vibration suppressor. When the vibration suppressors are uniformly installed along full length of the rope, the maximum rope deflection becomes smaller as the number of the vibration suppressor is made greater. It is also presented that the calculated results of reaction force from vibration suppressor are in fairly good agreement with experimental ones.