Development of large damping force rotary damper using particle assemblage

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Other Title
  • 大減衰力回転型粒状体ダンパの開発

Abstract

<p>This study was conducted for the purpose of establishment of the torque increase technique of the rotary particles damper. The steel balls of 0.8 mm in diameter and the sands of 0.25-0.30 mm in diameter were used as the particles. The dynamic flowability of the sands is lower than the fluidity of the steel balls. The torque properties of the rotary particles damper were investigated under conditions of frequency of 10 Hz from 1, and amplitude of 30 degrees. The torque of the rotary particles damper increased when the steel balls were used at a high packing fraction. However, many pulsatile torque changes occurred. On the other hand, the torque of the rotary particles damper using the sands was larger than the torque of the rotary particles damper using the steel balls. The rotary particle damper using the sands did not have the pulsatile torque changes.</p>

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