소음진동 (Journal of KSNVE)

한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
권호 표지

결합부 유연성에 따른 감쇠거동에 관한 고찰 : 히스테레틱 감쇠

Estimations of the Hysteretic Damping by Controlled Joint Flexibilities

  • 윤성호 (한국철도기술연구원 경량전철연구팀)
  • 발행 : 1999.04.01
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초록

The purpose of this paper is to investigate the damping behavior of a flexible joint. The slip at a structrual joint is selected at the tips of two identical cantilever beams adjoining each other. Both the direction of normal force and its magnitude varies due to the global deformation of the structure from mode to mode in the friction model. The friction dependent on vibration displacements resultsin the same functional behavior of the hysteretic material damping. Linearized energy loss factors are obtained as functions of both linear and torsional spring stiffness for their groups of symmetric and anti-symmetric modes, respectively. Experimental measurements as made for comparisons with analytical estimations by controlling the magnitude of fastening torque in the fastener, Hi-Lite. Trends on damping levelsmeasured in a very common vibration test method make an excellent agreement on the estimated damping levels.

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참고문헌

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  12. Technical Specification Note Hi-Shear Corp.