Journal ArticleDOI
Effect of the preload in the general static load‐carrying capacity of four‐contact‐point slewing bearings for wind turbine generators: theoretical model and finite element calculations
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This article is published in Wind Energy.The article was published on 2014-10-01. It has received 29 citations till now. The article focuses on the topics: Slewing bearing & Yaw bearing.read more
Citations
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Journal ArticleDOI
Failure prediction, monitoring and diagnosis methods for slewing bearings of large-scale wind turbine: A review
TL;DR: Current situation of researches on wind turbine slewing bearing is summarized systematically and failure prediction, monitoring and diagnosis methods of slewing bearings for industries are reviewed and summarized, which can be potentially used for wind energy industry.
Journal ArticleDOI
A study of grease lubricants under wind turbine pitch bearing conditions
TL;DR: In this paper, the anti-wear properties of wind turbine pitch bearing conditions were investigated under downscaled wind turbine bearing conditions by load simulation for a pitch bearing and analysis of pitch movements for a 7.5 MW reference turbine.
Journal ArticleDOI
Friction torque in four contact point slewing bearings: Effect of manufacturing errors and ring stiffness
TL;DR: In this article, a procedure for the determination of the interferences between balls and raceways in four contact point slewing bearings due to manufacturing errors is presented, and finite element analyses are performed for the friction torque calculation, considering different preloads.
Journal ArticleDOI
A new finite element approach for the analysis of slewing bearings in wind turbine generators using superelement techniques
TL;DR: This work presents a superelement-based FE model that significantly reduces the computational cost with a negligible accuracy loss and is applicable to yaw and pitch bearings assemblies in wind turbine generators.
Journal ArticleDOI
Running Torque of Slow Speed Two-Point and Four-Point Contact Bearings
TL;DR: In this paper, a decoupled slow speed friction torque model was developed to predict the running torque of a double-arched angular contact bearing when operating as a four-point, as well as a two-point contact bearing.
References
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Journal ArticleDOI
3D Simplified Finite Elements Analysis of Load and Contact Angle in a Slewing Ball Bearing
TL;DR: In this article, a 3D finite element (FE) simplified analysis of load distribution and contact angle variation in a slewing ball bearing is presented, which is based on the Hertz theory and models the rolling elements under compression by nonlinear traction springs between the centers of curvature of the raceways.
Journal ArticleDOI
Load distribution in a four contact-point slewing bearing
TL;DR: In this article, a four contact-point bearing with one row of ball bearings was discussed under general load conditions (moment, axial load, and radial load) and the load distribution in two contact point rolling elements was calculated.
Journal ArticleDOI
An Engineering Approach to Hertzian Contact Elasticity—Part I
TL;DR: In this article, a new load/deformation relationship is derived analytically and use is made of the thickness of the outer race section, where a minor effect of the section thickness is shown.
Journal ArticleDOI
Ball Motion and Sliding Friction in a Four-Contact-Point Ball Bearing
Alexandre Leblanc,Daniel Nelias +1 more
TL;DR: In this article, an analysis of double arched ball bearing, which considers centrifugal forces and gyroscopic effects, is performed based on operating conditions of a five DOF inner ring and Coulomb friction model, the conventional bearing theory is extended from two to three or four contact points.
Journal ArticleDOI
General static load-carrying capacity for the design and selection of four contact point slewing bearings: Finite element calculations and theoretical model validation
TL;DR: In this paper, the authors developed a theoretical model to evaluate the static load capacity of four contact point slewing bearings and formulated an acceptance surface in the load space, in such a way that the validity of a load combination is assured by an inside-surface checking.
Related Papers (5)
3D Simplified Finite Elements Analysis of Load and Contact Angle in a Slewing Ball Bearing
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
Samo Zupan,Ivan Prebil +1 more