Abstract
This paper describes some experiments and analogue-computer simulation on a new magnetic type of vibration absober consisting of two permanent magnets, floating magnet A and fixed magnet B, repelling each other. Two magnets put to the test are short columnar shaped, and arranged in vertical line in a diamagnetic cylindrical container as A can move freely against B fixed to the vibrating body.The results obtainned are as follows:(1) The repelling force of the magnet may by considered to be inversely proportional to the square of the distance between the equivalent two point poles.(2) The amplitude of the target vibration of the body decreases considerably due to the violent vibration of the floating magnet.(3) The damping force is adjustable effectively by a small hole bored in the center of the floating mgnet.(4) The unsymmetricity of the amplitude is clearly recognized in the magnet vibration and the sub-harmonic resonance is possible for the slight damping, but such nonlinear behaviors are considered to be of little importance in the practical use.(5) The results of the analogue-computer simulation shows a good coincidence with those of the experiments from the qualitative point of view.
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