DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이동현 | ko |
dc.contributor.author | 김영철 | ko |
dc.contributor.author | 김경웅 | ko |
dc.date.accessioned | 2009-12-24T05:35:42Z | - |
dc.date.available | 2009-12-24T05:35:42Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2007-10 | - |
dc.identifier.citation | 한국윤활학회지, v.23, no.5, pp.219 - 227 | - |
dc.identifier.issn | 1229-4845 | - |
dc.identifier.uri | http://hdl.handle.net/10203/15822 | - |
dc.description.abstract | The dynamic performance of air foil bearings relies on a coupling between a thin air film and an elastic foil structure. A number of successful analytical techniques to predict dynamic performance have been developed. However, the evaluation of its dynamic characteristic is still not enough because of the mechanical complexity of the foil structure and strong nonlinear behavior of friction force. This work presents a nonlinear transient analysis method to predict dynamic performance of foil bearings. In this method, time dependent Reynolds equation is used to calculate pressure distribution and a finite element method is used to model the bump foil structure. The analysis is treated with a direct implicit integration technique that can handle nonlinear problems and the stick-slip algorithm is used to consider friction force. Using this method the response to the mass unbalance excitation is investigated for various design parameters and operating conditions. The results of analysis show that foil bearing is very effective on the restriction of vibration at the resonance frequency compared to the rigid surface bearings and the effectiveness depends on the operating conditions, static load and a amount of mass unbalance. In addition, there exist optimum values of friction coefficient, bump foil stiffness and number of circumferential slit with regards to minimizing dynamic response at the resonance frequency. These optimum values are system dependent. | - |
dc.description.sponsorship | 두뇌한국21사업 | en |
dc.language | Korean | - |
dc.language.iso | ko | en |
dc.publisher | 한국윤활학회 | - |
dc.title | 마찰을 고려한 포일저널베어링의 동특성해석: 회전불균형 응답 | - |
dc.title.alternative | The Dynamic Performance Analysis of Foil Journal Bearings Considering Coulomb Friction: Rotating Unbalance Response | - |
dc.type | Article | - |
dc.subject.alternative | foil journal bearing | en |
dc.subject.alternative | friction | en |
dc.subject.alternative | rotating unbalance response | en |
dc.type.rims | ART | - |
dc.citation.volume | 23 | - |
dc.citation.issue | 5 | - |
dc.citation.beginningpage | 219 | - |
dc.citation.endingpage | 227 | - |
dc.citation.publicationname | 한국윤활학회지 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | 김경웅 | - |
dc.contributor.nonIdAuthor | 이동현 | - |
dc.contributor.nonIdAuthor | 김영철 | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.