| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Outline of Final Research Achievements |
①A method to reduce the rope sway is proposed by using dynamic damper. Rope lateral vibration is controlled by fluctuating rope tension using up-and-down motion of this dynamic damper. The method to determine the optimal parameter of this dynamic damper is also shown.
②Finite difference analysis of the rope vibration with vibration suppressor is performed to obtain the frequency response curves. Resonance frequencies obtained by the finite difference analyses are in good agreement with the natural frequencies for the free vibration. Vibration modes obtained by the finite difference analyses are similar to that for the free vibration.
③To estimate influence of the vibration suppressor more correctly, a method to identify the flexural rigidity, the viscous damping and the structural damping of the rope is indicated.
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