Analysis of Double-Row Tapered Roller Bearings, Part II – Results: Prediction of Fatigue Life and Heat Dissipation

Nélias, Daniel; Bercea, I.; Mitu, N.

doi:10.1080/10402000308982623

Cited by 25 publications

(13 citation statements)

References 9 publications

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“…According to (20) and (25), the relation of the displacement and rotation angle between inner and outer rings under external loads can be expressed by…”

Section: Solution Of Stiffness Matrixmentioning

confidence: 99%

“…However, inertial loading due to the rotational speed effect was not considered in their bearing model. Bercea et al [24,25] presented the relationship of bearing stiffness given by Harris [14] in a DRTRBs example, and formulated the relative displacement between the bearing rings for various double-row bearing types such as DRTRBs [26]. Fernandez et al [2] optimized presetting loads to improve working conditions for a doublerow TRB.…”

Section: Introductionmentioning

confidence: 99%

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A Method to Solve the Stiffness of Double‐Row Tapered Roller Bearing

Zhang

Shi

Liu

et al. 2019

Mathematical Problems in Engineering

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By analyzing the roller force, the nonlinear stiffness model of the double-row tapered roller hub bearing is derived, and the method of solving the hub bearing stiffness matrix is summarized: if the displacement between the inner and outer rings is known, the stiffness of the hub bearing can be directly calculated. If only the external load of the hub bearing is known, the displacement of the hub bearing needs to be solved by numerical method, and then the stiffness of the hub bearing can be calculated. The improved Newton-Raphson method is used to solve the stiffness matrix of the hub bearing. Three-dimensional FE model of DRTRBs is presented and validated the proposed the stiffness matrix of the hub bearing. It is found that the radial stiffness of the hub bearing is greater than the axial stiffness. The stiffness of the hub bearing is greatly affected by the vertical force of the ground and the wheel driving torque, showing obvious nonlinearity. The smaller the vertical ground load and wheel driving torque, the greater the influence of vertical ground load and wheel driving torque on the hub bearing stiffness.

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“…According to (20) and (25), the relation of the displacement and rotation angle between inner and outer rings under external loads can be expressed by…”

Section: Solution Of Stiffness Matrixmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Method to Solve the Stiffness of Double‐Row Tapered Roller Bearing

Zhang

Shi

Liu

et al. 2019

Mathematical Problems in Engineering

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“…The analysis of the axial force and misalignment influence of inner ring on the internal load between rollers and raceways is conducted on a TDIRB-LM287649D [15] used in a 5 MW FDDWT and manufactured by Timken. The bearing geometrical and material properties are presented in Table 1.…”

Section: Numerical Analysismentioning

confidence: 99%

The Load Distribution of the Main Shaft Bearing Considering Combined Load and Misalignment in a Floating Direct-Drive Wind Turbine

Zheng

Yin

et al. 2018

E3S Web Conf.

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The main shaft tapered double-inner ring bearing (TDIRB) of floating direct-drive wind turbine system (FDDWT) is one of the most critical components in FDDWT, and its failure accounts for a large proportion of wind turbine malfunctions and faults. Over the past decades, a significant number of methods have been proposed to calculate the contact load distribution along the roller length in TDIRB, since the contact load distribution of roller is the key factor of fatigue life of TDIRB. Most of methods, however, neglected the misalignment of inner ring with respect to outer ring and friction force. In this paper, with the help of comprehensive and accurate quasi-static mathematical method, the contact load distribution of internal loads in TDIRB are analysed by considering the effects of combined loads, angular misalignment and friction force at different wind speeds for FDDWT. The simulation results show that the amount of combined load has an apparent effect on the contact load distribution along the TDIRB raceways and flanges in both rows. Furthermore, the slight change of tilted misalignment has a great influence on the contact load distribution. In addition, the slight angular misalignment easily produces noncontact zone for the bearing raceway in both rows, which is significantly disadvantage for the external load uniform transmitting to each roller.

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“…For double-row TRBs, Nelias et al. 22 developed a model to analyze the bearing fatigue life by considering the effect from axial compression and tilting moment. Yang et al.…”

Section: Introductionmentioning

confidence: 99%

Fatigue life analysis of double-row tapered roller bearing in a modern wind turbine under oscillating external load and speed

Zheng

Yin

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Fatigue life analysis of roller bearing is usually performed for bearings under constant rotating speed and invariant loading conditions. For the bearings used in offshore floating direct-drive wind turbines, they often experience oscillating motions with varying loading patterns, for which the standard fatigue life analysis is not valid due to the presence of fluctuating loads. This paper presents the fatigue life analysis of a double-row tapered roller bearing under oscillating external load and speed conditions, which is used to support the main shaft of a large modern direct-drive wind turbine. First, a comprehensive quasi-static model of the double-row tapered roller bearing is developed for determining the internal load distribution of rollers. The contact pressure of rollers is then studied using an iterative scheme based on the elastic contact model. After that, the formulation of basic rating life of the double-row tapered roller bearing with oscillating external load and speed is given to calculate the fatigue life. Numerical simulations are carried out to investigate the effects of the oscillating load and speed, angular misalignment, and internal clearance on the fatigue life of the bearing.

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Analysis of Double-Row Tapered Roller Bearings, Part II – Results: Prediction of Fatigue Life and Heat Dissipation

Cited by 25 publications

References 9 publications

A Method to Solve the Stiffness of Double‐Row Tapered Roller Bearing

A Method to Solve the Stiffness of Double‐Row Tapered Roller Bearing

The Load Distribution of the Main Shaft Bearing Considering Combined Load and Misalignment in a Floating Direct-Drive Wind Turbine

Fatigue life analysis of double-row tapered roller bearing in a modern wind turbine under oscillating external load and speed

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