Wind Turbine Pitch and Yaw Bearing Design Validation
Difficulties arise for wind turbine pitch and yaw bearing design and analysis due to: (1) complex and flexible structure, (2) rolling elements with point contact on the raceways, (3) bolt connections that may partially open, and (4) complex load cases. Use of Finite Element Analysis (FEA) allows for the flexible structure, preloaded bolts and contact analysis. However, using conventional FEA for pitch and yaw bearing analysis is impractical because very fine mesh is required for small contact zones and consequently solving the inevitably huge non-linear model requires use of super computers. In this paper, we present a special finite element, which allows ball contacts to be modelled in unrefined structural meshes providing accurate stiffness calculation. The accuracy and efficiency of this element has been verified by examples.
Hua Qiao Andrew Smith
Romax Technology Limited, Nottingham Science Park, Nottingham, NG7 2PZ, England
国际会议
2007上海国际风能大会(Wind Power Shanghai 2007)
上海
英文
410-420
2007-11-01（万方平台首次上网日期，不代表论文的发表时间）