Numerical and experimental aspects of thermally induced vibration in real rotors

Jevtic, B Milenko; Radovanovic, Z Ljiljana; Adamović, Živoslav

doi:10.2298/tsci110314039j

Cited by 7 publications

(5 citation statements)

References 7 publications

(11 reference statements)

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“…The touch is on a certain contact area, which is generally curved. [6,9,11,12] Another component of rolling friction is the torque that acts against rotation. It is known that the magnitude of the deformation of a certain material below the elastic limit is independent of the loading but is also influenced by the load sense.…”

Section: Load On Rolling Bearingsmentioning

confidence: 99%

“…The beginning of the bearing deformation is reflected in the bearing behavior, typically by raising the temperature or by increasing noise and stronger vibrations. The article analyzes the effect of the operating temperature on the life of rolling bearings [2,4,5,6]. The thesis describes the simulation of rolling bearings at different temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…The cage generally guides the rolling elements, keeping them at a uniform distance and preventing them from touching one another. To produce bearing rings and rolling elements, hardenable chromium steels are most commonly used [6,7,8]. The carbon content of these steels is about 1 % and the chromium content is about 1.5 %.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Operation Temperature on Rolling Bearings

Kantoríková

Fabian

2019

DDF

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Rolling bearings are among the most widely widespread components in the engineering industry. A critical issue is damage to functional surfaces of rolling bearings, which has arisen during the operation. An important area is the monitoring of production temperature and its impact on components. We undertook this study to damage of functional surfaces bearings. It was decided that the optimal procedure is comparing three samples, each with another type of damage. This procedure will aid determine the cause of damaged bearings. This work has shown the adverse effect of residual austenite and residual stresses caused by the production process on the dimensional stability of the bearing components.

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Section: Load On Rolling Bearingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Operation Temperature on Rolling Bearings

Kantoríková

Fabian

2019

DDF

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“…Reliability function and failure intensity function are unique, i.e., a specific reliability function corresponds to a single specific failure intensity function, and vice versa (Jevtic et al, 2011). Failure density function in the case of exponential distribution is referred to in Eq.…”

Section: Laboratory Investigationsmentioning

confidence: 99%

Reliability of agriculture universal joint shafts based on temperature measuring in universal joint bearing assemblies

Asonja¹,

Desnica

2014

Span. j. agric. res.

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This paper presents a research into reliability calculations of agriculture double universal joint shafts based on temperature measuring in cardan-type universal joint bearing assemblies. Special laboratory equipment was developed for this research which is presented in the paper. The objective of this research was to test the real life span of universal joint shafts in the laboratory and in field, to obtain the results which can be used to improve the reliability of universal joint shafts. If the presented research were used along with maintenance measures recommended in the paper and with proper use, the level of reliability of the shafts would be 2.1 times higher. The presented results of the research showed that needle bearings, i.e. bearing assemblies of the joints, are the most critical elements on universal joint shafts and are possible causes of their lower reliability. The second universal joint is the part with the lowest reliability in the observed technical system.

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“…In addition, most of the existing research results of the stress and displacement distribution and the stiffness characteristics of the bearing do not take into account the influence of the external environmental factors of bearing and structural parameters or only consider the single influence factor. 21–27 It is urgent to carry out the study of the bearing characteristics under the influence of multiple factors.…”

Section: Introductionmentioning

confidence: 99%

Distribution characteristics of stress and displacement of rings of cylindrical roller bearing

Zhou

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this paper, the developed finite element model of the shaft-cylindrical roller bearing–bearing housing system is established considering the temperature effect and clearance change. The displacement, raceway stress, and bearing stiffness characteristics of the inner and outer rings of the bearing are systematically investigated. The proposed finite element model is validated through adjusting mesh size of the bearing and the comparison of the elastic deformation of the bearing with the experiment. The influence of load, clearance, and temperature expansion on the displacement distribution of the inner and outer rings of the bearing, raceway stress, and stiffness characteristics are all discussed. The obtained results indicate that an appropriate selection of thermal expansion stress can obtain desirable working ambient temperature of the bearing under different clearances, which can serve as an efficient tool in the design of bearing parameters.

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Numerical and experimental aspects of thermally induced vibration in real rotors

Cited by 7 publications

References 7 publications

Influence of Operation Temperature on Rolling Bearings

Influence of Operation Temperature on Rolling Bearings

Reliability of agriculture universal joint shafts based on temperature measuring in universal joint bearing assemblies

Distribution characteristics of stress and displacement of rings of cylindrical roller bearing

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