エレベータロープ振動の減衰特性に関する基礎実験

抄録

In order to estimate the vibration damping characteristics of the elevator rope, basic experiments using piano wire were executed. There are three causes of vibration damping of the rope. The first one is viscous damping which is proportional to vibration speed. The second is vortex damping which is proportional to velocity squared, and the third is mechanical damping of the wire end. The transfer function of displacement between the end of the wire and the center of the wire are measured, while changing both the atmospheric pressure and the vibration excitation amplitude. Velocity square damping becomes dominant when the vibration amplitude is large.