| 摘要 |
PURPOSE: A tube vibration damper of a propeller shaft is provided to secure the shape optimization, power transferring efficiency improvement, and NVH(Noise, Vibration, Harshness) performance improvement. CONSTITUTION: A tube vibration damper(100) of a propeller shaft comprises a propeller shaft(10) and a damper(110). The propeller shaft is rotated in high speed and transfers power. The damper absorbs the vibration of the propeller shaft. The damper comprises an outer ring, an inner ring, an elastic block, a magnet, a variable control unit, and a solenoid(120). The outer ring is contacted with the inner portion of the propeller shaft. The inner ring and the outer ring are concentrically arranged. The elastic block is made of a magneto-rheological elastic member and arranged in radial direction. The magnet is installed for electric motive force generation. The variable control unit generates heat following to the electric motive force and changes resonance frequency by using the heat.
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