Bearing internal load analysis and fatigue life estimation based on nonlinear dynamic model of a gear system

Kong, Xiannian; Ding, Han; Tang, Jinyuan; Hu, Zehua; Chen, Siyu

doi:10.1177/1077546321998559

Cited by 11 publications

(4 citation statements)

References 26 publications

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“…Duan et al [ 30 ] established a coupling model—including a quasi-static model, a fatigue life model, and a mixed lubrication model—to study the effects of angular eccentricity on high-speed cylindrical roller bearings. Kong et al [ 31 ] established a nonlinear dynamic model of a gear-bearing system. The dynamic model can calculate the internal load of the bearings and determine their fatigue life by using linear damage theory.…”

Section: Introductionmentioning

confidence: 99%

Multidimensional Study on the Wear of High-Speed, High-Temperature, Heavy-Load Bearings

et al. 2023

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The friction and wear performance of high-performance bearings directly affects the accuracy and maneuverability of weapons and equipment. In this study, high-speed, high-temperature, and heavy-load durability experiments of weapon bearings were carried out, and their wear properties (i.e., surface wear, metamorphic layer, scanning electron microscopy/energy-dispersive spectroscopy (SEM/EDS), residual stress, and retained austenite) were analyzed in multiple dimensions. The results showed the following: (1) The experimental temperature of the serviced front-end bearing is always lower than that of the rear bearing. (2) The metamorphic layer of the serviced rear bearing (i.e., inner ring, outer ring, rolling body, and cage) > the metamorphic layer of the serviced front-end bearing > the metamorphic layer of the unserviced bearing. (3) The rolling body of the rear bearing at high experimental temperatures contains not only elemental O, but also elemental P and Sr. (4) In the EDS analysis of the rolling elements, with the migration from the “ball edge” to the “ball center”, the elemental C in the rolling elements of serviced or unserviced bearings decreases slowly, while the elemental Fe content increases slowly.

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Section: Introductionmentioning

confidence: 99%

Multidimensional Study on the Wear of High-Speed, High-Temperature, Heavy-Load Bearings

et al. 2023

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“…[1][2][3] Their shapes, sizes, and quantity can directly change the operating performance and fatigue life for PRBs. 4,5 Therefore, the roller profile modification is a vital method to enhance the load performance and reduce the vibrations of PRB. It is necessary to formulate and compare the dynamic forces and vibrations of different roller profile shapes.…”

Section: Introductionmentioning

confidence: 99%

A simulation method for dynamic force and vibrations of a roller bearing in the planetary gears considering the roller profile

Liu

Shi

Xu³

et al. 2023

The Journal of Strain Analysis for Engineering Design

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The roller profile shape can change the fatigue life and vibrations for planet roller bearing (PRB), as well as the impact between the rollers and cage. In this study, an analytical study of the dynamic forces and vibrations of a PRB considering the roller profile. To avoid the stress concentration at the roller ends, the roller modification method is proposed to improve the dynamic forces. The contact stiffness and load-deformation exponent of the roller-race interaction for four different roller modification types are achieved. A PRB dynamic model is established to discuss the effects of roller modification types on the dynamic forces and vibrations for PRB. Computation results of those four roller modification types are compared to the results of the PRB with the cylindrical roller type. It includes that the roller profile shape can greatly change the contact forces between the rollers and races, as well as the impact forces between the rollers and cage. The roller profile shapes can also influence the vibrations of PRBs.

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“…Impact load is a common operating condition in types of machinery, such as automobiles, mining machines and wind turbines, and is an important cause of failure before the end of the design life of gearbox bearings (Dhanola and Garg, 2020; Kong et al , 2021). Analysis of the signals during bearing rotation indicates that a variety of damage can occur to the bearing under these conditions (Zhao et al , 2022; Li et al , 2022).…”

Section: Introductionmentioning

confidence: 99%

Analysis of damage evolution and causative factors of outer raceway micromorphology of small needle roller bearings under impact load

Liu

et al. 2022

ILT

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Purpose This paper aims to investigate the damage evolution of bearing raceways under impact conditions from the perspective of three-dimensional (3D) surface morphology changes and to analyze the causal factors with the aid of simulation. Design/methodology/approach An experimental device containing an impact generating mechanism, a transmission mechanism and a torque load is designed for the experiments of impact damage to the outer raceway of a small needle roller bearing HK1208 without an inner ring. Microscopic images and height color maps of each experimental stage were obtained using a 3D laser measurement microscope. The characterization parameters of the surface 3D morphology were extracted and analyzed. Dynamics simulations of the impact condition were performed using the finite element method to investigate the variations and distribution characteristics of the roller forces on the raceway. Findings The changes in roughness and 3D micromorphology show that the surface flattening phenomenon caused by the flattening effect occurs before the surface of the bearing raceway is damaged. The result of dynamic simulations shows that the maximum load of the bearing under the impact state is obviously greater than that under a steady state, and the load distribution under the two conditions is significantly different. Originality/value This paper provides new ideas for analyzing the damage of bearings under impact conditions by analyzing the real 3D morphology of bearing raceways in combination with the finite element method.

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Bearing internal load analysis and fatigue life estimation based on nonlinear dynamic model of a gear system

Cited by 11 publications

References 26 publications

Multidimensional Study on the Wear of High-Speed, High-Temperature, Heavy-Load Bearings

Multidimensional Study on the Wear of High-Speed, High-Temperature, Heavy-Load Bearings

A simulation method for dynamic force and vibrations of a roller bearing in the planetary gears considering the roller profile

Analysis of damage evolution and causative factors of outer raceway micromorphology of small needle roller bearings under impact load

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