Vibrations Caused by Dry Friction

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  • Vibration caused by dry friction

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Description

Self-excited vibrations caused by dry friction, which is generally expressed as a function of relative sliding velocities between two solid bodies, are analysed theoretically and observed experimentally. The characteristics of these vibrations are divided into two groups by the type of friction. One is experienced in the case of pure dry friction, where the amplitudes of steady vibration increase with the increase of sliding velocities and the frequencies are nearly equal to the natural frequency of the system. Another occurs in the case of boundary lubrication, where the amplitudes vary slowly with sliding velocities and the frequencies increase with the increase of sliding velocities. In the case of boundary lubrication, self-excited vibrations occur by hard excitation, even if the frictional force increases with the increase of relative velocities. Experimental results obtained from the case of dry friction show good coincidence with the theoretical results.

Journal

  • Bulletin of JSME

    Bulletin of JSME 7 (25), 40-52, 1964

    The Japan Society of Mechanical Engineers

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