论文信息 - Contact Stress and Deformation of Blade Bearing in Wind Turbine

Contact Stress and Deformation of Blade Bearing in Wind Turbine

Slewing ring with negative clearance is used as blade bearing in wind turbine. Negative clearance dramatically increase contact forces between balls and raceways. Existing methods for calculating loads between raceway and balls in four contact-point slewing ring suppose that the raceways are rigid and only assume elastic deformations of rolling elements. Experiments show that negative clearance dramatically increase contact forces between balls and raceways, and these forces make elastic deformations in rings of blade bearing. This paper investigates the relation between negative clearance and contact stress. A computation model for blade bearing without external load but considering elasticity of rings in computation is established and solve methods are discussed.

Long Chen | Xintao Xia | Yaping Zhang

[1] J. Maxwell. A Treatise on Electricity and Magnetism , 1873, Nature.

[2] Alain Daidié,et al. Screw behavior in large diameter slewing bearing assemblies: numerical and experimental analyses , 2007 .

[3] Ivan Prebil,et al. Experimental determination of damage to bearing raceways in rolling rotational connections , 2006 .

[4] Johan Driesen,et al. Modeling wind turbine generators for power system simulations , 2003 .

[5] I. Prebil,et al. Adaptive and variant design of rotational connections , 2005, Engineering with Computers.

[6] S. Zupan,et al. Carrying angle and carrying capacity of a large single row ball bearing as a function of geometry parameters of the rolling contact and the supporting structure stiffness , 2001 .

[7] T. A. Harris,et al. Rolling Bearing Analysis , 1967 .

[8] Jorge Damian,et al. Load distribution in a four contact-point slewing bearing , 2003 .

[9] Joseph Maciejewski,et al. Quality Assurance Testing of a Slewing Bearing , 2008 .