Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Methods to Obtain Approximate Responses of a Non-Linear Vibration Isolation System

비선형 진동절연 시스템의 근사적 응답을 구하는 방법

  • Lee, Gun-Myung (Research Center for Aircraft Parts Technology, Gyeongsang National University)
  • 이건명 (경상대학교 항공기부품기술연구소)
  • Received : 2020.02.14
  • Accepted : 2020.03.20
  • Published : 2020.06.30
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Abstract

A non-linear vibration isolation system composed of a non-linear spring and a linear damper was presented in a previous study. The advantage of the proposed isolator is the simple structure of the system. When the base of the isolator is harmonically excited, the response component of the mass at the excitation frequency was approximated using three different methods: linear approximation, harmonic balance, and higher-order frequency response functions (FRFs). The method using higher-order FRFs produces significantly more accurate results compared with the other methods. The error between the exact and approximate responses does not increase monotonously with the excitation amplitude and is less than 2%.

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References

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