Operational life of a radial ball bearing determined by the condition of the maximal permissible wear

Pavlov, V. G.

doi:10.3103/s1052618807060155

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…A wide range of studies are known based on the finite element method (FEM) [14-18]. The topics of these publications are similar or close to publications [5][6][7][8][9][10][11]. Studies [14-18] allowed to summarize a large amount of information about the operation of bearings in various operating conditions and confirmed the results obtained earlier.…”

Section: Introductionmentioning

confidence: 64%

“…The necessity to take these parameters into account under constant and variable loading conditions is reflected in GOST 18855-2013, as well as in the works of famous scientists [3][4]. Additionally, contact interactions in bearings were studied [5][6][7] in order to increase their service life and carrying capacity [8][9][10][11]. The regularities of the formation and accumulation of fatigue microdamages in the surface layer of the raceways were investigated in the publications [12; 13].…”

Section: Introductionmentioning

confidence: 99%

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Experimental verification of new features of bearing operation under combined loading conditions

Kirilovskiy

Владимирович²,

Belousov

et al. 2021

Struct. Mech. of Eng. Const. and Build

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Bearing units of lifting machines, products of construction, road, aviation, space and other branches of technology are very important structural elements, since the failure of even one bearing can cause the failure of the entire product. The results of experimental verification of the theoretical model of bearing operation under combined loading conditions are presented. The behavior under load of bearing units in the most general case can be represented by a sequence of five design schemes, expressed in the form of five statically indeterminate beams. The purpose of the experiments was to test this model under real loading conditions. The experiments were based on the analysis of the geometric shape of the curved elastic line, which the shaft of the bearing assembly acquires under load. The experimental results confirmed the validity of the model and showed that the previously generally accepted model of a two-support beam is not implemented. The conclusion is confirmed that in responsible lifting machines, as well as in responsible products of construction, road, aviation, space and other branches of technology, it is impractical to calculate bearings according to the traditional method, since an erroneous value of bearing durability can be obtained, overestimated from 28.37 to 26.663.9 times.

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Section: Introductionmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Experimental verification of new features of bearing operation under combined loading conditions

Kirilovskiy

Владимирович²,

Belousov

et al. 2021

Struct. Mech. of Eng. Const. and Build

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Predicting changes in radial and axial clearances in ball bearings lubricated with low-viscosity liquids

Silayev

Барманов

2022

VESTNIK of Samara University. Aerospace and Mechanical Engineer

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Parts of rolling bearings lubricated with low-viscosity fluids are subject to intense wear of the working surfaces. The bearing life cycle under these conditions depends on the wear rate of the friction surfaces. Therefore, it is important to establish the relationship between the wear rate, the change in the clearances and the duration of work. This paper presents the results of wear tests for rolling ball bearings. After the tests the radial and axial clearances were measured, their changes and the duration of operation were analyzed. Having determined the path of friction, the wear rates of the bearings were calculated based on the values of changes in the radial and axial clearances. The wear rate of the bearing on the axial and radial clearances was plotted against the reduced (equivalent) load. The obtained dependences were approximated with a confidence of at least 98%. The obtained analytical expressions allow us to perform express calculations for changes in the bearing clearances. This will make it possible to forecast the bearing service time, taking into account the wear of the working surfaces under specified conditions, while ensuring correct functioning of the support assembly.

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Step-by-step simulation of wear of working surfaces in roller bearings

Klebanov¹,

Мурашкин²,

Vorobieva³

2023

VESTNIK of Samara University. Aerospace and Mechanical Engineer

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The purpose of this work was to develop effective methods for calculating the wear rate of raceways and roller bearings under dynamic loads. The wear of the working surfaces of rolling bearings in many practical cases is an important critical factor affecting their performance and durability. However, only a limited number of publications are devoted to this issue. In most of them, Archard's law, which has been experimentally confirmed during hydrodynamic friction of bearing steels, is used to calculate the wear rate of the contacting surfaces. Based on this law, the article presents a method of direct step-by-step calculation of the wear rate at variable contact loads and sliding speeds. In accordance with it, the change in the normal force, sliding speed and thickness of the oil film in contact is determined in the dynamic calculation of the bearing, and the finite element method is used to calculate the contact pressure field. The multi-mass model of bearing dynamics includes a contact friction model that allows adequately reproducing the conditions of hydrodynamic contact of solids. The direct calculation method involves a large number of calculations that make the impact of individual factors on the wear rate opaque. Therefore, along with it, a method for calculating the wear rate by averaged parameters is proposed. Using these two methods, the wear calculations of the raceway of the inner ring and the rollers of a double-row tapered roller bearing were performed. The comparison of the results confirms the acceptable accuracy of the calculation according to the averaged parameters.

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Operational life of a radial ball bearing determined by the condition of the maximal permissible wear

Cited by 3 publications

References 1 publication

Experimental verification of new features of bearing operation under combined loading conditions

Experimental verification of new features of bearing operation under combined loading conditions

Predicting changes in radial and axial clearances in ball bearings lubricated with low-viscosity liquids

Step-by-step simulation of wear of working surfaces in roller bearings

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