A Novel Method to Compute the Elastic Approach of a Hollow Roller

Liu, Yankui

doi:10.1115/1.4038952

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…So that, researchers have recently developed a type of composite cylindrical roller that hollows out the center of a solid cylinder and fills it with flexible materials PTFE to improve the contact and operating characteristics of bearings. This transforms the roller into a composite roller with a rigid-flexible connection that possesses both hollow and solid roller features (Chhotani et al , 2021; Liu, 2018).…”

Section: Introductionmentioning

confidence: 99%

Study on contact and vibration characteristics of composite cylindrical roller bearings

Bian,

Zhang,

Jiao

et al. 2023

ILT

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Purpose The purpose of this paper is to establish a dynamic analysis model of composite cylindrical roller bearings, investigate the effects of different working conditions on the kinematic characteristics of composite bearings and compare the differences between them and solid roller bearings. Design/methodology/approach This paper establishes a dynamic analysis model for composite cylindrical roller bearings and proves the correctness of the established model by establishing dynamic vibration experiments and contact theory for composite roller bearings. Comparative analysis was conducted on the effects of coupling changes in rotational speed, load, number of rollers and filling ratio on parameters such as bearing static stiffness, contact stress and vibration acceleration. Findings The composite roller can enhance the bearing’s operational stability and minimize contact stress, but that a higher filling ratio is going to increase the bearing’s stiffness. The acceleration degree of bearing vibration, the load on the outer raceway nodes and the bearing stability all decrease as inner ring speed rises. Originality/value A dynamic calculation model of composite cylindrical roller bearings is established, and the influence of multiparameter coupling changes on bearing vibration and contact is studied, which lays a foundation for the structural improvement of the bearings.

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Section: Introductionmentioning

confidence: 99%

Study on contact and vibration characteristics of composite cylindrical roller bearings

Bian,

Zhang,

Jiao

et al. 2023

ILT

View full text Add to dashboard Cite

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Analytical solutions of stress distribution within a hollow cylinder under contact interactions

Liu²,

Feng³

et al. 2023

International Journal of Mechanical Sciences

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Strength Against Fracture of End Hemispherical Cavity Roller Under Static Loading: Experimental and Simulation Investigation

Chhotani

Vakharia

2020

Journal of Tribology

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Enhancement in fatigue life of rolling element bearing has been captivating since years. The hollow concept had been triggered years back, however it could not catch widespread applications due to catastrophic failure. Thus, any novel concept of rolling element must be assessed for its strength against catastrophic failure before competing for better fatigue life on-field with other alternatives. This paper commences with the outcomes of comparative assessment of the experimental evaluation of strength against fracture under static loads for layered and hollow rollers with solid rollers, which devise the requirements for new concepts. The EHC (End Hemispherical Cavity) roller concept, being a proper geometrical blending of solidity and hollowness, prospects to overcome the strength concern along with considerable reduction in contact stresses. Thus, experimental investigation was conducted with full-bearing fracture tests and individual roller specimens fracture tests for five variants: EHC, solid, layered, 61H and 37H (Hollow rollers with 61% and 37% hollowness respectively). The simulations were carried out to support the outcomes of experimental trials. The experimental results with full-bearing samples and individual roller specimens demonstrated ranking as: EHC, 37H, layered and 61H. The EHC roller concept was substantiated to be stronger than hollow and layered rollers besides prompting appreciable reduction in contact stresses compared to solid roller. The simulation results agreed well with experimental results of fracture tests and the recommendations from findings of failure theories (Maximum Normal Stress, Distortion Energy and Maximum Shear Stress) adopted for estimating fracture load for rollers have been discussed.

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A Novel Method to Compute the Elastic Approach of a Hollow Roller

Cited by 3 publications

References 9 publications

Study on contact and vibration characteristics of composite cylindrical roller bearings

Study on contact and vibration characteristics of composite cylindrical roller bearings

Analytical solutions of stress distribution within a hollow cylinder under contact interactions

Strength Against Fracture of End Hemispherical Cavity Roller Under Static Loading: Experimental and Simulation Investigation

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