Journal ArticleDOI
Effect of manufacturing errors on load distribution in large diameter slewing bearings of fast breeder reactor rotatable plugs
Sriramachandra Aithal,N. Siva Prasad,Shunmugam,P. Chellapandi +3 more
- Vol. 230, Iss: 9, pp 1449-1460
TLDR
In this article, an attempt has been made to find the influence of manufacturing errors on load distribution among the rolling elements using finite element method, which has been shown to improve the performance and life of the bearing.Abstract:
Fuel and other subassemblies in fast breeder reactor are handled through a combination of small rotatable plug, large rotatable plug and transfer arm. Rotation of the plugs is facilitated through large slewing bearings. These bearings are subjected to heavy loads and moments. Manufacturing errors on the rolling elements and races influence the load sharing among the elements. As a result, higher load acting on a rolling element causes excessive local deformation and unacceptable indentation. The higher load can also cause excessive sub-surface shear stress and fatigue failure of rolling races. Too stringent tolerances demand sophisticated machines, whereas liberal tolerances mean compromise on the performance and life of the bearing. There are no established methods for design of slewing bearings that include the influence of manufacturing errors. Hence, an attempt has been made to find the influence of manufacturing errors on load distribution among the rolling elements using finite element method. It is...read more
Citations
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Journal ArticleDOI
Static structural behaviour of wire bearings under axial load: Comparison with conventional bearings and study of design and operational parameters
TL;DR: In this paper, the influence of different parameters on the static structural response of wire bearing stiffness, load capacity and contact status (contact force and angle, and ellipse truncation) have been evaluated for several combinations of conformity, friction coefficient and boundary conditions.
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Mechanical behaviors of cross roller bearings with raceway roundness error
TL;DR: In this paper, a static analysis model of cross roller bearings considering the raceway roundness error was established, and the rotational accuracy and load distribution of CRBs under constraints of geometry and external loads were derived.
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Parameters research on time-varying stiffness of the ball bearing system without race control hypothesis:
Yongzhen Liu,Yimin Zhang +1 more
TL;DR: When the ball bearing serving under the combined loading conditions, the ball will roll in and out of the loaded zone periodically as mentioned in this paper, therefore the bearing stiffness will vary with the position of the bearing.
Journal ArticleDOI
A Method for Monitoring the Technical Condition of Large-Scale Bearing Nodes in the Bodies of Machines Operating for Extended Periods of Time
Piotr Sokolski,Tadeusz Smolnicki +1 more
TL;DR: To determine whether bearing joints were in a good or bad condition, a coefficient of variation and an impulse factor were introduced as diagnostic indicators and it turned out that by evaluating these indicators, it was possible to distinguish between these two conditions.
Posted ContentDOI
Calculation method of static carrying curve for double-row different-diameter ball slewing bearing
TL;DR: In this article , the static carrying curve of the double-row different-diameter ball slewing bearing was calculated by using the deformation compatibility conditions and the force equilibrium conditions, and the relationship between the internal maximum rolling element load of each row and the external load combination of the bearing was established.
References
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Book
Essential Concepts of Bearing Technology
TL;DR: In this paper, the authors introduce the concept of rolling bearing and apply it to a variety of applications, including industrial, national, and international standards, such as interference fitting and clearance.
Journal ArticleDOI
Modelling of rollers in calculation of slewing bearing with the use of finite elements
TL;DR: In this paper, a method of calculating the deformation characteristics of roller slewing bearings is presented, where the type and the parameters of the roller generator correction have the largest influence on the analysed deformation.
Journal ArticleDOI
3D Simplified Finite Elements Analysis of Load and Contact Angle in a Slewing Ball Bearing
TL;DR: In this article, a 3D finite element (FE) simplified analysis of load distribution and contact angle variation in a slewing ball bearing is presented, which is based on the Hertz theory and models the rolling elements under compression by nonlinear traction springs between the centers of curvature of the raceways.
Journal ArticleDOI
Load distribution in a four contact-point slewing bearing
TL;DR: In this article, a four contact-point bearing with one row of ball bearings was discussed under general load conditions (moment, axial load, and radial load) and the load distribution in two contact point rolling elements was calculated.
Journal ArticleDOI
Carrying angle and carrying capacity of a large single row ball bearing as a function of geometry parameters of the rolling contact and the supporting structure stiffness
Samo Zupan,Ivan Prebil +1 more
TL;DR: In this article, the authors show a computation model that allows the correct choice of raceway curvature center shift in the raceway section plane with respect to the rolling element circle.