Characteristics of Tangible Threshold Vibration

DOI

Bibliographic Information

Other Title
  • 検知し得る振動-觸感特性について

Description

Characteristics of threshold vibration tangible to the tips of fingers have been observed over a range from 5 cps to 1000 cps with a vertical vibration generator. It is found that the thershold amplitude of vibration φ is proportional to d2φ/dt2 in the range of 5_??_150 cps, to φ in the range of 200_??_400 cps and to ∫∫φ(dt)2 in the range of 500_??_1000 cps where φ is the displacement and is represented approximately by<br> _??_<br> where<br> φ: the threshold vibration amplitude in μ, <br> K: the minimum value of φ in μ, <br> ƒ: the frequency per sec, <br> h: a damping constant, <br> n1 : the first order natural frequency of the vibration, <br> n2: the second order natural frequency of the vibration.<br>Actually the values of the constants n1, n2 and K were<br> n1=160 cps, n2=500 cps and K=0.2μ.<br> It is concluded that the human body can be represented by a fine vibrograph, its magnification coefficient being equal to the product of that of displacement vibrograph and that of accelerometer.

Journal

  • Oyo Buturi

    Oyo Buturi 24 (3), 118-121, 1955

    The Japan Society of Applied Physics

Details 詳細情報について

  • CRID
    1390282679606999936
  • NII Article ID
    130003586920
  • DOI
    10.11470/oubutsu1932.24.118
  • ISSN
    21882290
    03698009
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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