마찰감쇠를 갖는 기저가진 진동계의 변위전달율
Displacement Transmissibility of Base-Excited Vibration Isolator with Friction Damping
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초록
Friction damping is often used as a vibration isolation medium to protect large objects from vibration. In this paper, it is modeled and analyzed a basis-excited nonlinear vibration system with friction damping using the SCPA method, which is one of the averaging methods. The displacement transmissibility and the stability of the steady state response were analyzed seperately for the linear and the non-linear spring systems. The critical frequency at which the relative motion starts was obtained as a function of the friction ratio, and the characteristics of the displacement transmissibility according to the change of the design parameters were investigated. In the case of the nonlinear spring system, the displacement transmissibilities were divided into three types and the motion characteristics were considered. In particular, there was a peculiarity that the displacement transmissibilty curve was separated at specific parameter values.
Abstract
Friction damping is often used as a vibration isolation medium to protect large objects from vibration. In this paper, it is modeled and analyzed a basis-excited nonlinear vibration system with friction damping using the SCPA method, which is one of the averaging methods. The displacement transmissibility and the stability of the steady state response were analyzed seperately for the linear and the non-linear spring systems. The critical frequency at which the relative motion starts was obtained as a function of the friction ratio, and the characteristics of the displacement transmissibility according to the change of the design parameters were investigated. In the case of the nonlinear spring system, the displacement transmissibilities were divided into three types and the motion characteristics were considered. In particular, there was a peculiarity that the displacement transmissibilty curve was separated at specific parameter values.
참고문헌 (11)
- J. E. Ruzicka, "Influence of Damping in Vibration Isolation" (1971)
- R. A. Ibrahim, "Recent advances in nonlinear passive vibration isolators", Journal of Sound and Vibration, 314, pp.371~452 (2008)
- J. H. Lee, "Passive Vibration Isolators", Journal of KSNVE, 27(3), pp.6~9 (2017)
- 신윤호, "와이어 메쉬 재질을 이용한 하이브리드 마운트용 수동 진동 절연 요소 설계", 한국소음진동공학회논문집, 30(1), pp.75~81 (2020), 한국소음진동공학회[DOI]
- 민경원, "지진하중을 받는 구조물의 성능에 기초한 마찰감쇠기 설계", 한국지진공학회논문집, 7(6), pp.17~24 (2003), 한국지진공학회
- D. J. Hur, "Analysis of an Isolation System with Vertical Spring-viscous Dampers in Horizontal and Vertical Ground Motion", Applied Science, 10, pp.1141~ (2020)
- L. Marino, "Displacement transmissibility of a Coulomb friction oscillator subject to jointed base-wall motion", Nonlinear Dynamics, 98, pp.2595~2612 (2019)
- B. Ravindra, "Hard Duffing-type Vibration Isolator with Combined Coulomb and Viscous Damping", International Journal of Non-Linear Mechanics, 28(4), pp.427~440 (1993)
- P. Hagedorn, "Non-Linear Oscillations" (1981)
- 홍성철, "Damping Effects on Parametric Resonances of a Straight Pipe with Pulsatile Flow", 한국기계기술학회지, 19(5), pp.661~669 (2017), 한국기계기술학회[DOI]
- A.H. Nayfeh, "Nonlinear oscillations" (1995), Wiley-VCH