Tapered Joint Design for Power Transmission of MW-grade Wind Turbine

MW급 풍력발전기 동력전달용 테이퍼 연결장치 설계에 관한 연구

  • 강종훈 (중원대학교 메카트로닉스학과) ;
  • 배준우 (중원대학교 메카트로닉스학과) ;
  • 온한용 (중원대학교 메카트로닉스학과) ;
  • 권용철 (경남테크노파크)
  • Received : 2015.05.19
  • Accepted : 2015.08.11
  • Published : 2015.11.01


This study focuses on the design of the tapered joints of a wind power turbine. The main variables of the tapered joint are the transmitted torque, shaft diameter, contact area of the tapered ring, and tightening torque of the bolts, which applies a compressive pressure from the hub to the shaft. The stress distribution of the taper fit was calculated under axisymmetric plane strain conditions because of the small taper angle. The axial displacement of the clamp can be calculated from the radial elastic deformation and the taper angle. The stress field of each ring is obtained from the cylinder stress equation. To verify the accuracy of the calculation, finite element (FE) analysis was performed, and the results of the calculation and FE analysis were compared. The hoop stress of the tapered surface showed a discrepancy of approximately 10, but the trends of the stress distributions of each component and the relative movement obtained by FE analysis were in good agreement with the analytical calculation results.


Tapered Joint;Axisymmetric Plane Strain;Power Transmission;Stress Analysis;Finite Element Method


Supported by : 에너지기술평가원


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