Numerical Simulation of Sliding Wear for Self-lubricating Spherical Plain Bearings

Shen, Xuejin; Liu, Yunfei; Cao, Lei; Chen, Xiaoyang

doi:10.1016/s2238-7854(12)70003-0

Cited by 41 publications

(17 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although establishing the model and writing the subprogram were very complicated, the analysis results indicated that the complex nonlinear wear process could be simulated with a series of discrete quasi static models. Shen et al [22] established a two-dimensional finite element wear model of self-lubricating spherical plain bearings, which provided an effective way of predicting the wear life of mechanical components. However, the two-dimensional model could not reflect the 3D contact pressure distributions on the whole wear surface.…”

Section: Introductionmentioning

confidence: 99%

Finite element simulation and experimental test of the wear behavior for self-lubricating spherical plain bearings

et al. 2018

View full text Add to dashboard Cite

In this study, based on the classical Archard adhesion wear theory, a three-dimensional finite element model was established, with the aim of simulating the failure process of self-lubricating spherical plain bearings in the swinging wear condition. The results show that the self-lubricating spherical plain bearings go through two different stages during the wear process, namely, initial wear stage and stable wear stage. Because the large contact points wear out during the initial wear stage, the maximum contact pressure decreases as the test period increases. The relatively larger wear depth region shows elliptical distribution, and the maximum distribution appears in the central contact area. The wear depth reaches 0.974 mm after swinging 25,000 times. PTFE fibers, which possess a good friction performance but poor abrasion resistance, abundantly exist on the friction surfaces of the fabric liner. Consequently, the friction torque during the initial wear stage is slightly smaller than the friction torque during the stable wear stage; however, the wear rate during the initial wear stage is high. The reliability and effectiveness of the finite element model are verified by experiment. The developed finite element model can be used for the analysis of the wear mechanisms of bearings and the prediction of the service life of bearings.

show abstract

Section: Introductionmentioning

confidence: 99%

Finite element simulation and experimental test of the wear behavior for self-lubricating spherical plain bearings

et al. 2018

View full text Add to dashboard Cite

show abstract

“…As for the distribution of contact pressure along the axial direction, the direct measurement of contact deformation is more difficult due to the restriction of axial constraints. However, previous experimental and simulation studies on the wear of bearings have shown that the wear depth curve along the axial direction presents a W-shaped feature, 11 which infers that the contact and tribological characteristics change dramatically near the edges of the bearing. Thus, the free-edge effects of the spherical bearing on the axial contact pressure can also be proven qualitatively.…”

Section: Resultsmentioning

confidence: 99%

“…Researchers have proposed various models to describe the distribution of contact pressure and corresponding deformation on contact surfaces of spherical plain bearings. 11 It should be pointed out that the contact between the inner sphere of the outer ring and the outer sphere of the inner ring in spherical plain bearings is a typical conformal contact, which indicates that the contact surfaces fit each other quite well with a comparable size as the contacted subjects. 12 Thus, this case is not suitable for the classical contact theory established by Hertz 13 which assumes that the contact area is very small compared to the size of the objects.…”

Section: Introductionmentioning

confidence: 94%

Distribution of conformal contact pressure in spherical plain bearings considering friction and free-edge effects

Han

Yao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

The pressure distribution of conformal contact in spherical plain bearings is studied adopting both theoretical methods and finite element simulations. The effects of normal loads and friction coefficients on the distribution of both axial and circumferential contact stress are investigated. The results show that the circumferential stress can be exactly described with the complete spherical conformal contact theory while the axial one presents strong free-edge effects, mainly caused by the compressive strain. In addition, the distribution of contact stress tends to be uniform with the increase of the load and the friction coefficient, referring to a decrease of contact pressure in the central region and a rise on both edges of the outer ring, which can be attributed to the obstruction effects of friction on the deformation of bearings and the corresponding alteration of contact area.

show abstract

“…Several studies (Moon and Shaw, 1983;Shen et al, 2012;Wei et al, 2011) have shown that the vibrational response of an object is sensitive to the excitation frequency, and may exhibit several types of vibrational behaviors. For the GTRF problem considered here, we first needed to determine whether the system could reach a steady-state mode of vibration.…”

Section: Vibrational Responsementioning

confidence: 99%

Effects of gap size and excitation frequency on the vibrational behavior and wear rate of fuel rods

Thouless

2016

Nuclear Engineering and Design

View full text Add to dashboard Cite

A wear map shows wear rate as a function of the grid-to-rod gap size and the frequency of the excitation force. The critical gap size, which is associated with the maximum wear rate, lies within the harmonic regime. In the no wear region the amplitude of the rod vibration is smaller than the gap size so that no impact between the rod and plate can happen. The curve of the resonant frequency of the system appears to overlap with the peaks in the contour.

show abstract

Numerical Simulation of Sliding Wear for Self-lubricating Spherical Plain Bearings

Cited by 41 publications

References 7 publications

Finite element simulation and experimental test of the wear behavior for self-lubricating spherical plain bearings

Finite element simulation and experimental test of the wear behavior for self-lubricating spherical plain bearings

Distribution of conformal contact pressure in spherical plain bearings considering friction and free-edge effects

Effects of gap size and excitation frequency on the vibrational behavior and wear rate of fuel rods

Contact Info

Product

Resources

About