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    • 8. 发明授权
    • Vibration control apparatus
    • 振动控制装置
    • US5450931A
    • 1995-09-19
    • US216718
    • 1994-03-23
    • Hiromitsu MasudaTaichi SatoKihachiro TanakaYukiko Ikeda
    • Hiromitsu MasudaTaichi SatoKihachiro TanakaYukiko Ikeda
    • D06F19/00F16F9/30F16F13/08
    • F16F13/08F16F9/303
    • A thixotropic material is charged in a container. The container also holds a movable member which is placed in the thixotropic material so as to stir the thixotropic material. A force transmitting element is connected to the movable member. When an object, the vibration of which is to be controlled, is out of resonance, the amplitude of vibration is so small that the thixotropic material is in a gel state, thus presenting a comparatively large spring constant for the vibration control apparatus. As the excitation frequency is increased towards the resonance range, the amplitude of vibration is increased correspondingly, so that the movable member stirs the thixotropic material to generate stress in the latter, whereby the phase of the thixotropic material is changed from gel to sol. Consequently, the natural frequency of the vibration system, including the object and the vibration control apparatus, is lowered, thus averting resonance. It is thus possible to obtain vibration restraining or control effect over a wide range of excitation frequencies.
    • 将触变材料装入容器中。 容器还保持放置在触变材料中的可动件,以搅拌触变材料。 力传递元件连接到可动件。 当要控制其振动的物体不共振时,振动的振幅如此之小,使得触变材料处于凝胶状态,因此对于振动控制装置呈现较大的弹簧常数。 随着激发频率向共振范围增加,振动幅度相应增加,使得可动件搅动触变材料,从而在后者中产生应力,从而使触变材料的相位从凝胶变为溶胶。 因此,包括物体和振动控制装置的振动系统的固有频率降低,从而避免共振。 因此,可以在宽范围的激励频率上获得振动抑制或控制效果。