Engineerilg f()r Education ( Engineering ) 3190 GofUkU , Toyama − shi, Toyaina, 930 − 8555 Japan An elevator rope for high − rise building is fbrcibly excited by the displacement of the building caused by earthquakes alld wind forces . In high−rise building , the elevator rope may resonate with the naturai frequency of the building ; hence , effective solution to reduce the rope displacement is demanded . In this paper , a method to suppress the rope displacement by using dynamic da皿 per is

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... ented . Finite Clifference analyses of rope vibration with dynamic damper are performed to verify the validity ofthis method . The optimal natural frequency ofdynamic Clamper is about 2 times ofthe natural 血equency of the rope . The rope sway can be reduced to about 112 , when the cage is stopped .