Transactions of the ASME . Journal of tribology, Vol. 130 N° 4. Journal of tribology - Octobre 2008
| Titre : | Transactions of the ASME . Journal of tribology, Vol. 130 N° 4. Journal of tribology - Octobre 2008 |
| Type de document : | Bulletin |
| Paru le : | 26/04/2015 |
Dépouillements
Article : texte imprimé
Article : texte imprimé
A Bouzidane,, Auteur ;
M. Thomas, Auteur ;
Lakis, A. A., Auteur
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This research project aims to study the nonlinear dynamic behavior of a rigid rotor supported by hydrostatic squeeze film dampers (HSFDs). The investigated HSFD consists of four hydrostatic bearing flat pads fed by capillary restrictors. A nonli[...]
Article : texte imprimé
Ankur Ashtekar, Auteur ;
Farshid Sadeghi, Auteur ;
Lars-Erik Stacke, Auteur
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A dynamic model for deep groove and angular contact ball bearings was developed to investigate the influence of race defects on the motions of bearing components (i.e., inner and outer races, cage, and balls). In order to determine the effects o[...]
Article : texte imprimé
James P. Butler, Auteur ;
Stephen H. Loring, Auteur
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During normal breathing, the mesothelial surfaces of the lung and chest wall slide relative to one another. Experimentally, the shear stresses induced by such reciprocal sliding motion are very small, consistent with hydrodynamic lubrication, an[...]
Article : texte imprimé
Dinçer Bozkaya, Auteur ;
Sinan Müftü, Auteur
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In chemical mechanical polishing (CMP), a rigid wafer is forced on a rough elastomeric polishing pad, while a slurry containing abrasive particles flows through the interface. One of the important factors that influence the material removal rate[...]
Article : texte imprimé
W. Wayne Chen, Auteur ;
Q. Jane Wang, Auteur
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A thermomechanical analysis of elasto-plastic bodies is a necessary step toward the understanding of tribological behaviors of machine components subjected to both mechanical loading and frictional heating. A three-dimensional thermoelastoplasti[...]
Article : texte imprimé
N. Biboulet, Auteur ;
A. A. Lubrecht, Auteur ;
L. Houpert, Auteur
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Indents perturb the pressure and stress distribution and increase the failure risk of rolling element bearings. A numerical study of the pressure perturbation is proposed. An existing dry contact model is extended to account for the indent shoul[...]
Article : texte imprimé
C. H. Venner,, Auteur ;
G. Popovici, Auteur ;
P. M. Lugt, Auteur
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Many elastohydrodynamically lubricated contacts in practical applications, e.g., in bearings, operate in the starved lubrication regime. As a result their performance is sensitive to variations of the lubricant layers present on the surfaces, wh[...]
Article : texte imprimé
Peiran Yang, Auteur ;
Jinlei Cui, Auteur ;
Z. M. Jin, Auteur
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The influence of the transversely and/or longitudinally oriented surface waviness on the lubricating behavior in the rolling/sliding elliptic contact composed of two steel bodies and lubricated with a non-Newtonian lubricant was investigated the[...]
Article : texte imprimé
Markus Hartinger, Auteur ;
Marie-Laure Dumont, Auteur ;
Stathis Ioannides, Auteur
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In this paper a computational fluid dynamics (CFD) approach for solving elastohydrodynamic lubrication using the freely available package OPENFOAM is introduced. The full Navier–Stokes equations are solved, which enables the entire flow domain t[...]
Article : texte imprimé
Ilya I. Kudish, Auteur ;
P. Kumar, Auteur ;
M. M. Khonsari, Auteur
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The estimation or prediction of elastohydrodynamic lubrication (EHL) film thickness requires knowledge of the lubricant properties. Today, in many instances, the lubricant properties have been obtained from a measurement of the central film thic[...]
Article : texte imprimé
Punit Kumar, Auteur ;
M. M. Khonsari, Auteur
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The combined influence of shear thinning and viscous heating on the behavior of film thickness and friction in elastohydrodynamic lubrication (EHL) rolling/sliding line contacts is investigated numerically. The constitutive equation put forward [...]
Article : texte imprimé
Punit Kumar, Auteur ;
M. M. Khonsari, Auteur
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An extensive set of full elastohydrodynamic lubrication point contact simulations has been used to develop correction factors to account for the effect of shear-thinning lubricant behavior on the central and minimum film thickness in circular co[...]
Article : texte imprimé
Masayuki Kanatsu, Auteur ;
Ohta, Hiroyuki, Auteur
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A running torque analysis was performed on axially loaded deep groove ball bearings lubricated with a polymer lubricant. The analysis included a Type I and a Type II bearing. The Type I bearing has a stamped steel riveted cage with its cavity pa[...]
Article : texte imprimé
S. K. Das, Auteur ;
Shubha Hegde, Auteur ;
K. M. Godiwalla, Auteur
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A probabilistic model based methodology has been applied to describe the relative rate of material loss from the steel surface subjected to simultaneous action of high temperature oxidation and mechanical erosion. Growth of the oxide scales is t[...]
Article : texte imprimé
N. Govindarajan, Auteur ;
R. Gnanamoorthy, Auteur
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Fatigue properties of powder metallurgy parts are affected mainly by the porosity fraction. Even though it has inferior mechanical and physical properties over the conventional materials, the application of powder metallurgy products in automoti[...]
Article : texte imprimé
A. Abouel-Kasem, Auteur ;
B. Saleh, Auteur ;
S. M. Ahmed, Auteur
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Wear particles produced by vibratory cavitation erosion tests on 1017 carbon steels in water and oil-in-water (o∕w) emulsions were analyzed. Scanning electron microscope (SEM) images of wear particles were acquired, forming a database for furthe[...]
Article : texte imprimé
Jeremy J. Dawkins, Auteur ;
Richard W. Neu, Auteur
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The aim of this study is to evaluate a methodology for modeling the influence of crystallographic grain orientation in sliding contacts. The simulations of translating interfering cylindrical asperities, using finite element analysis, were condu[...]
Article : texte imprimé
Carbon-fiber-reinforced paper-based friction material (CFRPF), as a new type of wet friction material for automatic transmission, was prepared by a paper-making process. The frictional response of CFRPF is highly complex under a set of dynamical[...]
Article : texte imprimé
M. A. Kabir, Auteur ;
C. Fred Higgs, Auteur ;
Michael R. Lovell, Auteur
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The present investigation analyzes a green, petroleum-free lubricant that is produced by mixing two environmentally benign components—canola oil and boric acid powder. To study the influence of boric acid particle size and solid volume fraction [...]
Article : texte imprimé
Scott Bair, Auteur ;
Riccardo Casalini, Auteur
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Quantitative calculations of film thickness and friction in elastohydrodynamic lubrication will require that the low-shear viscosity, μ, be described with far greater accuracy than it is today. The free volume model has the advantage, over those[...]
Article : texte imprimé
Shuyu Zhang, Auteur ;
Sung-Chang Lee, Auteur ;
Dongman Kim, Auteur
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Thermomechanical actuation (TMA) at the transducer region of the air bearing surface (ABS) protrudes from the transducer toward the recording media. This actuation induces a change in the air bearing pressure and a concomitant lift of the slider[...]
Article : texte imprimé
James White, Auteur
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The current effort was motivated by the increasing appearance of data storage devices in small portable and mobile product formats and the need for these devices to deliver high storage capacity, low power requirements, and increased ruggedness.[...]
Article : texte imprimé
Nihar Raje, Auteur ;
Farshid Sadeghi, Auteur ;
Richard G. Rateick, Auteur
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Fatigue lives of rolling element bearings exhibit a wide scatter due to the statistical nature of the rolling contact fatigue failure process. Empirical life models that account for this dispersion do not provide insights into the physical mecha[...]
Article : texte imprimé
Prasenjit Kar, Auteur ;
Pranay Asthana, Auteur ;
Hong Liang, Auteur
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Fundamentals of tribofilm formation and their properties were studied. In order to understand the effects of lubricants on tribofilms, four base oils were investigated. Lubricants include castor oil, polyethylene glycol, mineral oil, and margari[...]
Article : texte imprimé
T. Haque, Auteur ;
A. Morina, Auteur ;
A. Neville, Auteur
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In recent years, the optimized use of low friction nonferrous coatings under boundary lubrication conditions has become a challenge to meet the demands of improved fuel economy in automotive applications. This study presents the tribological per[...]
Article : texte imprimé
F.D. Fischer, Auteur ;
M. Wiest, Auteur
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The Hertzian contact theory is approximated according to a concept by Tanaka (2001, “A New Calculation Method of Hertz Elliptical Contact Pressure ,” ASME J. Tribol., 123, pp. 887–889) yielding simple analytical expressions for the elliptical s[...]
Article : texte imprimé
S. Shankar, Auteur ;
M. M. Mayuram, Auteur
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An axisymmetrical hemispherical asperity in contact with a rigid flat is modeled for an elastic perfectly plastic material. The present analysis extends the work (sphere in contact with a flat plate) of Kogut–Etsion Model and Jackson–Green Model[...]
Article : texte imprimé
David J. Murphy, Auteur ;
Thierry A. Blanchet, Auteur
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The load applied to a lead screw assembly is distributed amongst the engaged threads of its wearing nut in a manner that can range from highly nonuniform to nearly uniform. Nonuniform load distributions can arise when new or unworn threads are i[...]
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