The analysis of impact of intensity of contact load and angular shaft speed on the heat generation within radial ball bearing

Grujicic, Rade; Tomović, R.; Mitrović, Radivoje; Jovanović, Janko D.; Atanasovska, Ivana

doi:10.2298/tsci160229133g

Cited by 5 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[4][5][6][7] Thermal stability also plays an important role in terms of bearing's limiting performance. 8,9 All these parameters act in an integrated manner, determining the eventual bearing performance. Furthermore, during operation, the rolling elements within a bearing undergo complex motions such as rolling and sliding relative to the raceway grooves, as well as convergence and separation of the bearing rings.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of outer ring elastodynamics on vibration and power loss of radial ball bearings

Turnbull

Rahmani

Rahnejat

2020

Proceedings of the Institution of Mechanical Engineers, Part K:

View full text Add to dashboard Cite

Ball bearings are an integral part of many machines and mechanisms and often determine their performance limits. Vibration, friction and power loss are some of the key measures of bearing performance. Therefore, there have been many predictive analyses of bearing performance with emphasis on various aspects. The current study presents a mathematical model, incorporating bearing dynamics, mechanics of rolling element-to-races contacts as well as the elastodynamics of the bearing outer ring as a focus of the study. It is shown that the bearing power loss in cage cycles increases by as much as 4% when the flexibility of the outer ring is taken into account as a thick elastic ring, based on Timoshenko beam theory as opposed to the usual assumption of a rigid ring in other studies. Geometric optimisation has shown that the lifetime power consumption can be reduced by 1.25%, which is a significant source of energy saving when considering the abundance of machines using rolling element bearings. The elastodynamics of bearing rings significantly affects the radial bearing clearance through increased roller loads and generated contact pressures. The flexible ring dynamics is shown to generate surface waviness through global elastic wave propagation, not hitherto taken into account in contact dynamics of rollers-to-raceways which are generally considered to be subjected to only localised Hertzian deflection. The elastodynamic behaviour reduces the elastohydrodynamic film thickness, affecting contact friction, wear, fatigue, vibration, noise and inefficiency.

show abstract

Section: Introductionmentioning

confidence: 99%

“…[25][26][27] The effects of generated contact friction and heat generation are also taken into account in some studies. 8,9,28 Therefore, there are many interacting multi-physics issues which affect bearing dynamics, hence the plethora of research work in this area.…”

Section: Introductionmentioning

confidence: 99%

The effect of outer ring elastodynamics on vibration and power loss of radial ball bearings

Turnbull

Rahmani

Rahnejat

2020

Proceedings of the Institution of Mechanical Engineers, Part K:

View full text Add to dashboard Cite

show abstract

“…The FEM analyses for quasi static analysis of bearing parameters during contact period in referent temperature was performed by Mitrović et al [7]. Grujičić et al [8] considered the factors that influence heat generation within a ball bearing. The new equation and methodology for ball bearings' internal clearance determination, which could be used for eventual improvement of existing bearings' service life equations, was presented by Mišković et al [9].…”

Section: Introductionmentioning

confidence: 99%

A study of thermal behavior of the machine tool spindle

et al. 2019

View full text Add to dashboard Cite

The performances of high-speed machine tools depend not only on the speed, power, torque, dynamic and static stiffness, but also on the thermal behavior of the spindle. These parameters directly affect the productivity and quality of machining operations. This paper presents a 3-D finite element thermal model, which was based on the thermo mechanical bearing model and the numerical model of the spindle. Based on thermo mechanical analysis of bearings with angular contact, generated heat and thermal contact resistance are determined for each position of the ball. To provide the most accurate analysis possible in determining thermal contact resistance , bearings are divided into several zones based on the geometry of their cross-section. The aforementioned constraints have been applied to the 3-D FEM model which allowed for establishing temperature field distribution, and spindle thermal balance. In order to prove the efficacy of the proposed model, experimental measurements of spindle and bearing temperatures were done by using thermocouples and thermal imager.

show abstract

The Effect of Inert Gas in the Mixture with Natural Gas on the Parameters of the Combustion Engine

Chríbik

Polóni

Minárik

et al. 2019

Lecture Notes in Networks and Systems

View full text Add to dashboard Cite

The analysis of impact of intensity of contact load and angular shaft speed on the heat generation within radial ball bearing

Cited by 5 publications

References 9 publications

The effect of outer ring elastodynamics on vibration and power loss of radial ball bearings

The effect of outer ring elastodynamics on vibration and power loss of radial ball bearings

A study of thermal behavior of the machine tool spindle

The Effect of Inert Gas in the Mixture with Natural Gas on the Parameters of the Combustion Engine

Contact Info

Product

Resources

About