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무급유 마이크로가스터빈에 적용되는 공기포일저널베어링의 정하중 구조강성 및 손실계수 측정Measurements of Structural Stiffnesses and Damping Coefficients in Air foil Journal Bearings for Oil-Free Micro Gas Turbines

Other Titles
Measurements of Structural Stiffnesses and Damping Coefficients in Air foil Journal Bearings for Oil-Free Micro Gas Turbines
Authors
송영석이호원류근정진희류솔지
Issue Date
Dec-2018
Publisher
한국추진공학회
Keywords
Micro Gas Turbines(마이크로가스터빈); Foil Bearings(포일 베어링); Stiffness coefficients(강성계수); Damping coefficients(감쇠계수)
Citation
한국추진공학회 2018년도 추계학술대회 논문집, pp 776 - 777
Pages
2
Indexed
OTHER
Journal Title
한국추진공학회 2018년도 추계학술대회 논문집
Start Page
776
End Page
777
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/4742
Abstract
마이크로 가스터빈에 적용되는 공기포일저널베어링의 구조강성 및 감쇠계수를 측정하였다. 실험 베어링에 부가된 정적 하중에 따른 범프 포일의 변형량으로부터 얻은 국부 이력곡선을 이용하여 강성 및 에너지 소산 계수를 추정하였다. 측정된 포일 베어링의 구조적 특성은 베어링에 가해진 정적 예압에 크게 영향을 받는 것을 알 수 있었다.
The present work identifies structural stiffnesses and damping coefficients in air foil journal bearings for micro gas turbines. The local hysteresis loops from the applied static loads and measured bearing deflections while increasing preloads on the test bearing allow direct estimation of stiffness and energy dissipation parameters. The identified parameters show a notable effect of the applied preload on the structural coefficients of the test foil bearings.
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COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MECHANICAL ENGINEERING > 1. Journal Articles

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ERICA 공학대학 (DEPARTMENT OF MECHANICAL ENGINEERING)
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