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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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An Observation of the Application of a Magnetic Force to the Bicycle Cushion System and its Nonlinearity

자석 척력의 자전거 쿠션장치 적용 및 비선형성 고찰

  • Yun, Seong-Ho (Department of Mechanical Engineering, KUMOH NATIONAL INSTITUTE OF TECHNOLOGY)
  • 윤성호 (금오공과공대학교 기계공학과)
  • Received : 2017.11.30
  • Accepted : 2017.12.11
  • Published : 2018.02.28
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Abstract

This paper describes the dynamical behavior of the bicycle and its nonlinear effect when magnetic repulsive forces are applied to the bicycle cushion system. A finite-element method was used to obtain its reliabilities by comparing the experimental and numerical values and select the proper magnet sizes. The Equivalent spring stiffness values were evaluated in terms of both linear and nonlinear approximations, where the nonlinear effect was specifically investigated for the ride comfort. The corresponding equations of linear and nonlinear motion were derived for the numerical model with three degrees of freedom. Dynamic behaviors were observed when the bicycle ran over a curvilinear road in the form of a sinusoidal curve. The analysis in this paper for the observed nonlinearity of magnetic repulsive forces will be a useful guide to more accurately predict the cushion design for any vehicle system.

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References

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