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Keywords: rough surfaces
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Journal Articles
Article Type: Research Papers
J. Tribol. May 2022, 144(5): 051501.
Paper No: TRIB-21-1180
Published Online: August 11, 2021
...X. M. Liang; Y. Ding; Y. Duo; W. K. Yuan; G. F. Wang In this paper, an incremental equivalent contact model is developed for elastic-perfectly plastic solids with rough surfaces. The contact of rough surface is modeled by the accumulation of circular contacts with varying radius, which is estimated...
Journal Articles
Article Type: Research Papers
J. Tribol. August 2021, 143(8): 081503.
Paper No: TRIB-21-1020
Published Online: April 9, 2021
...G. F. Wang; X. M. Liang; D. Yan The accurate calculation of the real contact area between rough surfaces is a key issue in tribology. In this paper, based on the geometrical information of total contact area and the number of contact patches with respect to surface separation, a new method...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2021, 143(4): 041501.
Paper No: TRIB-20-1191
Published Online: September 28, 2020
...Wujiu Pan; Hongshuang Li; Haoyong Qu; Liangyu Ling; Linlin Wang The contact damping between rough surfaces has an important influence on the wear, vibration, contact fatigue, and energy dissipation between interfaces. In this paper, based on contact theory, a tangential damping mathematical model...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2011, 133(4): 042203.
Published Online: October 10, 2011
... the influence of roughness on the performance of the seal. The choice of a deterministic approach has been made, this being justified by a review of the literature. A numerical model for the generation of random rough surfaces has been used prior to the flow model in order to give an accurate description...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 031501.
Published Online: June 17, 2011
... high pressure. Solid contact stiffness was predicted using a statistical rough surface contact model. Under all operating conditions, the prediction of fluid stiffness was found to be much greater than the solid contact stiffness. The total stiffness predicted by the model showed good agreement...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2010, 132(3): 031602.
Published Online: June 15, 2010
... the model predictions and experimental results, believe the contribution of hardening behavior on the static friction coefficient predictions will be negligible compared with the normal preload. 4 The GW approach employed in this work to express the contact forces for nominally flat rough surfaces...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2010, 132(3): 031401.
Published Online: June 4, 2010
...L. Li; I. Etsion; F. E. Talke A model for the contact area and static friction of nominally flat rough surfaces and rough spherical surfaces is presented. The model extends previously published models, which are limited to plasticity index values below 8, to higher plasticity index values...
Journal Articles
Article Type: Technical Briefs
J. Tribol. April 2010, 132(2): 024505.
Published Online: April 26, 2010
...Fanming Meng; Q. Jane Wang; Diann Hua; Shuangbiao Liu The average flow model proposed by Patir and Cheng offers a great convenience for the analysis of rough surfaces in lubrication. The contact factor introduced by Wu and Zheng helps to solve a difficulty in local film evaluation using the average...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2010, 132(1): 011704.
Published Online: December 10, 2009
... of lubricant at inlet temperature η a ( Pa   s ) 0.119 Oil pressure at the inlet p 0 (MPa) 0.02 In order to investigate the influence of thermal effect on the performance of a misaligned bearing with roughness surface, the characteristics of the bearing...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2010, 132(1): 011401.
Published Online: November 12, 2009
...Shuyun Jiang; Yunjian Zheng; Hua Zhu A general contact stiffness model is proposed in this paper to study the contacts between rough surfaces of machined plane joints. The proposed model uses fractal geometry for surface topography description, elastic-plastic deformation of contacting asperities...
Journal Articles
Article Type: Technical Briefs
J. Tribol. October 2009, 131(4): 044504.
Published Online: September 25, 2009
...W. Cheng; K. Farhang Approximate closed-form equations are derived for normal contact force between nominally flat rough surfaces in dry contact. The formulation is based on the asperity-level interaction in which adhesive forces between two asperities and elastic and rate-dependent forces...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2009, 131(4): 041402.
Published Online: September 23, 2009
... for the contact of two rough surfaces. Half-plane tangential force due to elastic-plastic contact is derived through the statistical summation of tangential force component along an arbitrary tangential direction. Two sets of equations are found. In the first set of equations the functional forms are simpler...
Journal Articles
Article Type: Technical Briefs
J. Tribol. October 2009, 131(4): 044501.
Published Online: September 21, 2009
...Yuchuan Liu; Q. Jane Wang; Dong Zhu; Wenzhong Wang; Yuanzhong Hu This paper discussed the computational accuracy of rough-surface point-contact isothermal elastohydrodynamic lubrication (EHL) analysis by investigating the effects of differential scheme, viscosity-pressure, and shear-thinning models...
Journal Articles
Article Type: Technical Briefs
J. Tribol. July 2009, 131(3): 034503.
Published Online: June 1, 2009
...Ali Sepehri; Kambiz Farhang In this paper we consider the contact between two rectangular rough surfaces that provide normal and tangential contact forces, as well as contact moment, to counteract the net moment imposed by the applied forces. The surfaces are permitted to develop a slight angular...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2009, 131(2): 021409.
Published Online: March 9, 2009
... of Nominally Flat Surfaces ,” Proc. R. Soc. London, Ser. A 0950-1207 10.1098/rspa.1966.0242 , 295 , pp. 300 – 319 . Bush , A. W. , Gibson , R. D. , and Thomas , T. R. , 1975 , “ Elastic Contact of a Rough Surface ,” Wear 0043-1648 10.1016/0043-1648(75)90145-3 , 35 ( 1 ), pp. 87...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2009, 131(2): 021410.
Published Online: March 9, 2009
... useful information about the interface. The first loading of a rough surface contact takes place plastically, while subsequent loadings are largely elastic. Figure 2 shows schematically a number of typical loading cycles observed in these experiments ( 12 18 ). 21 11 2008 27 01 2009 09...
Journal Articles
Article Type: Technical Briefs
J. Tribol. April 2009, 131(2): 024504.
Published Online: March 6, 2009
..., and relative humidity are performed, respectively. The simulation results show that the interface stiffness, surface topography, and relative humidity can heavily influence the interface adhesion of rough surfaces with meniscus. 13 06 2007 20 10 2008 06 03 2009 adhesion elasticity...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2009, 131(2): 021404.
Published Online: March 5, 2009
...D. Cohen; Y. Kligerman; I. Etsion A model for elastic-plastic spherical contact of rough surfaces under combined normal and tangential loadings, with full stick contact condition, is presented. The model allows evaluation of the effect of surface roughness on the real contact area, static friction...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2009, 131(2): 021401.
Published Online: March 3, 2009
... roughness model allowing for a variation in asperity heights and tip radii. This will be undertaken in due course. During preparation of this paper two articles have appeared (in electronic form) on related topics. The first, by Kasarekar et al. ( 15 ), seeks to address wear of rough surfaces in partial...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2009, 131(1): 011501.
Published Online: December 2, 2008
...Ning Ren; Dong Zhu; W. Wayne Chen; Yuchuan Liu; Q. Jane Wang This paper reports the development of a novel three-dimensional (3D) deterministic model (3D L-EHL) for rough surface line-contact mixed-elastohydrodynamic lubrication (EHL) problems. This model is highly demanded because line contacts...