0
Applications

Load Performance of Large-Scale Rolling Bearings With Supporting Structure in Wind Turbines

[+] Author and Article Information
Guanci Chen

 School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, Chinagcchen@dlut.edu.cn

Jianmin Wen

 School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China

J. Tribol 134(4), 041105 (Sep 04, 2012) (9 pages) doi:10.1115/1.4007349 History: Received April 23, 2012; Revised August 06, 2012; Published September 04, 2012; Online September 04, 2012

The stiffness of rolling bearings and their supporting structure in wind turbines is very low because of their large dimensions. Accurate predictions of the deformations of bearing elements and their flexible supports are difficult. In this paper, the finite element method (FEM) is employed to determine the mechanical behaviors of the large-scale bearings. Traction springs are used to model the contact between raceways and rolling elements. A pitch bearing supports the whole hub, the partial hub and the rigid outer ring under loads is studied. Results show that a comprehensive model representing the surrounding structure is necessary for an accurate assessment of the actual loading conditions of large-scale WTG pitch bearings. The load is shared well between the two bearing rows by appropriately decreasing the stiffness of the plane rib.

Copyright © 2012 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Contact between raceway and ball

Grahic Jump Location
Figure 2

Sectional view of a pitch bearing

Grahic Jump Location
Figure 3

Bearing hub models

Grahic Jump Location
Figure 4

Load coordinate system

Grahic Jump Location
Figure 5

An assembly of bearing, hub, and blade

Grahic Jump Location
Figure 6

Spring elements used for a double row bearing

Grahic Jump Location
Figure 7

Constraints in the FEA model of three cases

Grahic Jump Location
Figure 8

Nomenclatures of the contact force and angle

Grahic Jump Location
Figure 9

Contact forces between balls and the first raceway

Grahic Jump Location
Figure 10

Contact forces between balls and the second raceway

Grahic Jump Location
Figure 11

Contact angle in the first raceway

Grahic Jump Location
Figure 12

Contact angle in the second raceway

Grahic Jump Location
Figure 13

Sketch of the ball-race contact

Grahic Jump Location
Figure 14

Angle β of the contact ellipse edge in the first inner raceway

Grahic Jump Location
Figure 15

Angle β of the contact ellipse edge in the second inner raceway

Grahic Jump Location
Figure 16

Displacement of the pitch bearing

Grahic Jump Location
Figure 17

Raceway’s radial displacement of the outer ring in the whole hub case (displacement scale is 100)

Grahic Jump Location
Figure 18

Contact forces between balls and the first raceway

Grahic Jump Location
Figure 19

Contact forces between balls and the second raceway

Grahic Jump Location
Figure 20

Angle β of the contact ellipse edge in the first inner raceway

Grahic Jump Location
Figure 21

Angle β of the contact ellipse edge in the second inner raceway

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In