Static load-carrying capacity and fatigue life of a double row pitch bearing with radial interference

Wang, Yanshuang; Yuan, Quan

doi:10.1177/0954406213486042

Cited by 14 publications

(9 citation statements)

References 15 publications

(23 reference statements)

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“…A carrying capability surface of the slewing bearing was calculated by solving the model. Wang and Yuan 7 established the static mechanical model of a double-row four-point contact ball slewing bearing in the polar coordinates and analyzed the effect of negative clearance on the load distribution of the balls. Daidie´et al 8 presented an analysis method of single-row four-point contact ball slewing bearing based on finite element analysis software, and the balls under compression were modeled by nonlinear traction springs between the curvature centers of the raceways.…”

Section: Introductionmentioning

confidence: 99%

Effects of design parameters on carrying capacity of a double-row tapered roller slewing bearing used in wind turbine

2016

Advances in Mechanical Engineering

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Mechanical model with detailed design parameters of a rotor slewing bearing with the structure type of double-row tapered roller for supporting the rotor of the wind turbine was presented. The internal geometrical relationships of the rotor slewing bearing were established in the Cartesian coordinate system. The elastic contact deformations between each tapered roller and the raceways were expressed through the geometrical transformation. The mechanical model was established using the equilibrium relations in the rotor slewing bearing. The safety factor and the fatigue life which represents, respectively, the ability of resisting the rolling contact plastic deformation failure and the rolling contact fatigue failure of the rotor slewing bearing were obtained based on the solution of the mechanical model. Effects of the detailed design parameters such as axial clearance, contact angle, and roller semi-cone angle on the carrying capacity of the rotor slewing bearing were analyzed. The results show that right amount of small negative axial clearance, increase in contact angle, and decrease in roller semi-cone angle are advantageous for enhancing the carrying capacity of the rotor slewing bearing. This provides the basis for the reasonable value selection of the design parameters of the doublerow tapered roller slewing bearing for supporting the rotor of the wind turbine.

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Section: Introductionmentioning

confidence: 99%

Effects of design parameters on carrying capacity of a double-row tapered roller slewing bearing used in wind turbine

2016

Advances in Mechanical Engineering

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“…Thus, much research on slewing bearing has focused on load distribution 1–6 or carrying capacity. 7–17 The effects of supporting structure or bolt on the load distribution of slewing bearing are considered in literature. 3–6 Similarly, the effects of supporting structure or bolt on the carrying capacity of slewing bearing are considered in literature.…”

Section: Introductionmentioning

confidence: 99%

Effects of supporting structure and bolt connection on the fatigue life and carrying capacity of a slewing bearing

Chen

Wang

Xiao

2016

Proceedings of the Institution of Mechanical Engineers, Part J:

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Four finite element models of a slewing bearing with different supporting structures are established by the finite element software ANSYS. In these models, the ball–race contact is simplified by the spring element with the same contact stiffness. The nut and bolt head are simplified and coupled with the surface of other connected component. The preload is applied on the bolt by a few pretension elements. The ball–race contact forces, fatigue lives, and carrying capacities of the slewing bearing in the four models are calculated. The effects of supporting stiffness, bolt number, and bolt preload on the contact force and fatigue life of the slewing bearing are studied. Moreover, the effects of supporting stiffness, bolt number, bolt preload, ball–race contact truncation, and bolt–hole backlash on the carrying capacities of the slewing bearing are analyzed. Results show that the fatigue life and carrying capacity of the slewing bearing can be enhanced by appropriately decreasing the supporting stiffness. Optimal values of bolt preload and number for the fatigue life and carrying capacity of a specific slewing bearing are obtained.

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“…Wang et al. 19 developed a computational model which incorporates the effect of radial interference for obtaining load distribution in a double row pitch bearing which is used for arriving at fatigue life. Similarly, Kania et al.…”

Section: Introductionmentioning

confidence: 99%

“…In recent published literature, one can see the increased use of FE method to obtain accurate load distribution among bearing elements. [17][18][19][20][21][22][23][24][25][26][27] Goncz et al 17 studied the load distribution in large threerow roller slewing bearings to extract contact forces which in turn is used to estimate the contact stress and fatigue life. The raceways were modelled as 3D bodies whereas the rollers were modelled as special nonlinear elastic connectors in compression, having identical force-deflection behaviour as real racewayroller-raceway contacts.…”

Section: Introductionmentioning

confidence: 99%

“…Similar approach was followed by Gao et al 18 to model ball-raceway contact in a slewing ring. Wang et al 19 developed a computational model which incorporates the effect of radial interference for obtaining load distribution in a double row pitch bearing which is used for arriving at fatigue life. Similarly, Kania et al 20 presented a FE method to arrive at catalogue capacity of variety of slewing bearings considering flexibility of bearing races.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of manufacturing errors on load distribution in large diameter slewing bearings of fast breeder reactor rotatable plugs

Aithal

Prasad

Shunmugam

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part C:

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Fuel and other subassemblies in fast breeder reactor are handled through a combination of small rotatable plug, large rotatable plug and transfer arm. Rotation of the plugs is facilitated through large slewing bearings. These bearings are subjected to heavy loads and moments. Manufacturing errors on the rolling elements and races influence the load sharing among the elements. As a result, higher load acting on a rolling element causes excessive local deformation and unacceptable indentation. The higher load can also cause excessive sub-surface shear stress and fatigue failure of rolling races. Too stringent tolerances demand sophisticated machines, whereas liberal tolerances mean compromise on the performance and life of the bearing. There are no established methods for design of slewing bearings that include the influence of manufacturing errors. Hence, an attempt has been made to find the influence of manufacturing errors on load distribution among the rolling elements using finite element method. It is observed that size error on the ball and waviness error (waviness spacing and height) on the raceway are the two influencing factors on load distribution. To study the influence of waviness error on the raceway, three sectors of bearing simulating waviness spacing of 10.8°, 18° and 36° with different waviness (peak-to-valley) height of 30 µm, 50 µm and 75 µm are analysed. It is observed that waviness height has larger influence on the load distribution among bearing balls when compared to waviness spacing.

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Static load-carrying capacity and fatigue life of a double row pitch bearing with radial interference

Cited by 14 publications

References 15 publications

Effects of design parameters on carrying capacity of a double-row tapered roller slewing bearing used in wind turbine

Effects of design parameters on carrying capacity of a double-row tapered roller slewing bearing used in wind turbine

Effects of supporting structure and bolt connection on the fatigue life and carrying capacity of a slewing bearing

Effect of manufacturing errors on load distribution in large diameter slewing bearings of fast breeder reactor rotatable plugs

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