자석 척력의 자전거쿠션장치 적용 및 비선형성 고찰An Observation of the Application of a Magnetic Force to the Bicycle Cushion System and its Nonlinearity
- Other Titles
- An Observation of the Application of a Magnetic Force to the Bicycle Cushion System and its Nonlinearity
- Authors
- 윤성호
- Issue Date
- 2018
- Publisher
- 한국기계가공학회
- Keywords
- Bicycle Cushion System(자전거 쿠션장치); Nonlinear Stiffness(비선형 강성); Magnetic Force(자석 척력)
- Citation
- 한국기계가공학회지, v.17, no.1, pp.42 - 47
- Journal Title
- 한국기계가공학회지
- Volume
- 17
- Number
- 1
- Start Page
- 42
- End Page
- 47
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/20098
- DOI
- 10.14775/ksmpe.2018.17.1.042
- ISSN
- 1598-6721
- 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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