Misalignment Effects in Cylindrical Roller Bearings

Benchea, Marcelin; Iovan-Dragomir, Alina; Creţu, S.

doi:10.4028/www.scientific.net/amm.658.277

Cited by 10 publications

(4 citation statements)

References 5 publications

(5 reference statements)

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“…3) appears due to the end effect (Crețu, 2019). In the case of a finite length of one of the cylinders, the pressure at the ends increases as the short cylinder end approaches (Benchea et al, 2014) (Fig. 4).…”

Section: Introductionmentioning

confidence: 96%

Approching of the Line Concentrated Contact as a Quarter Space Problem - A Review

Iovan-Dragomir,

Creţu

2023

Bulletin of the Polytechnic Institute of Iași. Machine Constructions Section

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Concentrated contact frequently occurs between machine elements, leading to the development of various forms of damage: abrasive wear, adhesive wear, and seizure, as well as surface destruction through contact fatigue. Contact fatigue is a typical mode of damage to machine parts (bearings, gears, wheel-track contact, but also cams and valves) under strong and repeated Hertz contact pressure (Kohn and Silva, 2020). Most concentrated contact problems, where bodies touch at a point or a line, are well described and solved using the assumptions and equations of Hertz’s theory, which associate bodies with elastic half-spaces. In the case of cylindrical bodies of finite length, Hertz’s equations do not correctly describe the state of stresses arising at the boundary. At non-coincidentally concentrated linear contact, these uncompensated stresses lead to the so-called ’end effect’: the pressure increases near the edges of the cylinder of shorter length. These uncompensated stresses have to be taken into account in the geometrical and functional design of machine elements. In this paper, the main methods of solving the stresses arising at concentrated linear contact with finite length are presented, in approaching the problem as a quarter-space problem.

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Section: Introductionmentioning

confidence: 96%

Approching of the Line Concentrated Contact as a Quarter Space Problem - A Review

Iovan-Dragomir,

Creţu

2023

Bulletin of the Polytechnic Institute of Iași. Machine Constructions Section

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“…Researchers generally used numerical methods other than the FEM to determine load distribution on rolling elements [19][20][21], while solid FEM models of a bearing fragment were used to analyze phenomena occurring in a single contact [22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

The use of FEM to evaluate the influence of logarithmic correction parameters of roller generators on the axle box bearing life

Chudzik

Warda

2021

Mechanics and Mechanical Engineering

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In the roller-raceway contacts of the radial cylindrical roller bearing used in the axle boxes of a railway bogie, pressure accumulation may occur, reducing the fatigue life. This accumulation can be eliminated by applying logarithmic correction of generators and in particular varieties of the modified logarithmic correction. The correction parameters should be adapted to the operating conditions of the bearing. This article presents a comparison of the predicted fatigue life of an axle box bearing on correctly selected correction parameters with bearing life, in which correction of roller generators was used, typical for cylindrical roller bearings of general application. The finite element method was used to determine the subsurface stress distributions necessary to calculate the fatigue life.

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“…According to the information in the catalogue [23] cylindrical single row bearings and cylindrical single row bearings with full number of rollers with flanges on the inner and outer ring can carry an axial load of value up to F a = 0.5 F r . Because of mechanical limitations permissible axial load of radial cylindrical roller bearings of the dimension series 2 cannot be greater than F ap max = 0.0045 D 1,5 . Basic nominal durability of the rolling bearing is determined from the formula:…”

Section: Introductionmentioning

confidence: 99%

“…For this purpose, three-dimensional models of the bearing fragment were built, which included a rolling element (roller) and a segment of one of the bearing rings [28,29] or parts of both rings [4]. Consideration of the FEM model for a bearing fragment instead of the full solid model is commonly used by numerous researchers in a situation where the main purpose of the analysis is to study phenomena occurring in a single contact of rolling elements [1,9,24,25,30,31]. The author of the work [13], who studied the influence of fitting and initial deformation on the resistance to motion in an angular-contact ball bearing, did a similar way.…”

Section: Introductionmentioning

confidence: 99%

Fatigue life prediction of a radial cylindrical roller bearing subjected to a combined load using FEM

Chudzik¹,

Warda²

2020

Eksploatacja i Niezawodność – Maintenance and Reliability

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Misalignment Effects in Cylindrical Roller Bearings

Abstract: All cylindrical-rollers profiles exhibit severe discontinuities in the end chamfer zones; the ZB profile includes two more at the common points of the crowned radius and straight line, Fig. 1.

Cited by 10 publications

References 5 publications

Approching of the Line Concentrated Contact as a Quarter Space Problem - A Review

Approching of the Line Concentrated Contact as a Quarter Space Problem - A Review

The use of FEM to evaluate the influence of logarithmic correction parameters of roller generators on the axle box bearing life

Fatigue life prediction of a radial cylindrical roller bearing subjected to a combined load using FEM

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