| 摘要 |
In a dynamic damper including: a torque transmissible tube member; a mass member housed within an inside of the tube member concentrically to the tube member; and a pair of elastic members, both ends of the mass member in a center axis direction of the tube member are coupled to the tube member via the pair of elastic members, the mass member includes a large mass section interposed between the pair of elastic members, a length of the mass member in the center axis direction of the tube member is longer than a diameter of the large mass section, and, from among two different bending resonance vibration modes of the tube member, a node of a higher order bending resonance vibration mode is placed at a position between the pair of elastic members.
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