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

- Journal title : Transactions of the Korean Society of Mechanical Engineers A
- Volume 39, Issue 11, 2015, pp.1183-1189
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.3795/KSME-A.2015.39.11.1183

Title & Authors

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

Kang, JongHun; Bae, JunWoo; On, Hanyong; Kwon, Yongchul;

Kang, JongHun; Bae, JunWoo; On, Hanyong; Kwon, Yongchul;

Abstract

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.

Keywords

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

Language

Korean

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