풍력에너지저널 (Journal of Wind Energy)

  • 제14권4호
  • /
  • Pages.21-28
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  • 2023
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  • 2093-5099(pISSN)
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  • 2733-9467(eISSN)
한국풍력에너지학회 (Korea Wind Energy Association)
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풍력발전기용 볼 베어링의 단순화 볼 모델을 이용한 해석기법 연구

A Study on a Finite Element Analysis Method Using Simplified Ball Models of Wind Turbine Ball Bearings

  • 김승우 (중원대학교, 대학원 융합공학과) ;
  • 송정우 (중원대학교, 대학원 융합공학과) ;
  • 홍준표 (중원대학교, 대학원 융합공학과) ;
  • 강종훈 (중원대학교, 무인항공기계학과 )
  • Seung-Woo Kim ;
  • Jung-Woo Song ;
  • Jun-Pyo Hong ;
  • Jong-Hoon Kang
  • 투고 : 2023.08.29
  • 심사 : 2023.12.01
  • 발행 : 2023.12.31
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초록

This study focuses on the analysis of slewing ball bearings in wind turbines. Slewing bearings have an outer diameter of several meters, and hundreds of balls are in contact with the raceway. Due to the large number of balls and raceway contact conditions, it is difficult to accurately analyze contact stresses using general analysis techniques. To analyze the contact stress of a slewing ball bearing, the sub-modeling method is applied, which is a technique that first analyzes the displacement of the entire model and then analyzes the local stress at the point of maximum displacement. In order to reduce the displacement analysis time of the entire ball bearing, the technique of replacing the ball with a nonlinear spring is adopted. The analytical agreement of the simplified model was evaluated by comparing it with a solid mesh model of the ball for three models with different spring attachment methods. It was found that for the condition where a large turnover moment is applied to the bearing, increasing the number of spring elements gives the closest results to modeling the ball with a solid mesh.

키워드

과제정보

본 연구는 산업통상자원부의 재원으로 한국에너지기술평가원의 2020년도 에너지기술개발사업 (과제번호 : 20203010020040)과 2023년도 신재생에너지핵심기술개발(R&D) (과제번호 : RS-2023-00302111)의 지원을 받아 수행한 연구입니다.

참고문헌

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  2. ISO 281, 2007, Rolling bearings-Dynamic load ratings and rating life.
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  10. Park, J. S., Kim, S. W., Kang, J. H., 2023, "Study on structural analysis technique of pitch bearing for wind turbine with preload between ball and raceway considered", The 2023 Spring Conference of Korea Wind Energy Association, Jeju, Korea
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