回転型粒状体ダンパのトルクに磁場印加が及ぼす影響

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  • Effect of Applying Magnetic Field on Torque of Rotary Damper Using Particle Assemblage

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In this study, influence that the torque properties of the rotary particles damper received from applying magnetic field were investigated. Steel balls of 0.8 mm in diameter were prepared as the particles. A coil was attached outside of the rotary particles damper to apply magnetic field to the particles. Strength of magnetic field that was applied to the particles was changed by adjusting an electric current. The torques of the rotary particles damper were measured under condition that the forced angular displacement of amplitude of 30 degrees was given to the rotary particles damper. The torque properties of the rotary particles damper under non-magnetic field was same as a torque properties of general friction damper. On the other hand, when the magnetic field was applied to the particles, the torques increased as the angular displacement of the damper was increased. The maximum torques were changed depending on magnetic field strength.

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