Transactions of the ASME . Journal of tribology, Vol. 132 N° 4. Journal of tribology :Transactions of the ASME - Octobre 2010
| Titre : | Transactions of the ASME . Journal of tribology, Vol. 132 N° 4. Journal of tribology :Transactions of the ASME - Octobre 2010 |
| Type de document : | Bulletin |
| Paru le : | 25/01/2011 |
Dépouillements
Article : texte imprimé
V. N. Patel, Auteur ;
N. Tandon, Auteur ;
R. K. Pandey, Auteur
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A dynamic model is reported herein for the study of vibrations of deep groove ball bearings having single and multiple defects on surfaces of inner and outer races. Masses of shaft, housing, races, and balls are considered in the modeling. The c[...]
Article : texte imprimé
Y. Zait, Auteur ;
V. Zolotarevsky, Auteur ;
Y. Kligerman, Auteur
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The multiple normal loading-unloading process of an elastic-plastic sphere by a rigid flat is analyzed using finite element method for stick contact condition and both kinematic and isotropic hardening models. The behavior of the global contact [...]
Article : texte imprimé
Raja R. Katta, Auteur ;
Andreas A. Polycarpou, Auteur
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A contact mechanics (CM) based model of a fixed-length rigid cylinder impacting a homogeneous elastic-plastic homogeneous body was developed and includes an improved method of estimating the residual depth after impact. The nonlinear elastic beh[...]
Article : texte imprimé
Article : texte imprimé
Nick Weinzapfel, Auteur ;
Farshid Sadeghi, Auteur ;
Vasilios Bakolas, Auteur
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The continuum theory of elasticity and/or homogeneously discretized finite element models have been commonly used to investigate and analyze subsurface stresses in Hertzian contacts. These approaches, however, do not effectively capture the infl[...]
Article : texte imprimé
Azam Thatte, Auteur ;
Richard F. Salant, Auteur
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A visco-elastohydrodynamic model of a hydraulic rod seal during transient operation has been developed. The model includes analyses of the macro- and microscale deformation mechanics and contact mechanics, and the microscale fluid mechanics. Vis[...]
Article : texte imprimé
B. Saleh, Auteur ;
A. Abouel-Kasem, Auteur ;
A. Ezz El-Deen, Auteur
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The effect of temperature on the wear particles produced by vibratory cavitation erosion tests on Al-99.92 in distilled water was analyzed. Scanning electron microscope images of wear particles were obtained, forming a database for further analy[...]
Article : texte imprimé
B. K. Prasad, Auteur ;
S. Rathod, Auteur ;
M. S. Yadav, Auteur
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The present investigation deals with the examination of the sliding wear response of a gray cast iron in oil lubricated condition over a range of applied pressure. The composition of the oil lubricant was changed by adding 5.26 wt % solid lubri[...]
Article : texte imprimé
Ozgen Akalin, Auteur ;
K. Vefa Ezirmik, Auteur ;
Mustafa Urgen, Auteur
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Wear characteristics of Al6061 composites, reinforced with short NiTi fibers, were investigated. The NiTi/Al6061 composite samples were fabricated using pressure-assisted sintering process in ambient air where the NiTi fibers are aligned unidire[...]
Article : texte imprimé
Bikramjit Basu, Auteur ;
Amartya Mukhopadhyay, Auteur ;
Ankit Mishra, Auteur
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The thermal conductivity of a metallic test piece is one of the principal parameters that influence the temperature buildup at tribocontacts and this normally plays an important role in the unlubricated dry sliding wear of metallic materials. It[...]
Article : texte imprimé
Jianguo Xin, Auteur
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When a drop of coffee dries on the counter-top, it leaves a dense, ringlike stain along its perimeter. Solids immersed in a drying drop will migrate toward the edge of the drop and form a solid ring. Such phenomena create ringlike stains and hap[...]
Article : texte imprimé
Ali Kahirdeh, Auteur ;
M. M. Khonsari, Auteur
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A method for detection of wear in thrust ball bearings coated with molybdenum disulphide (MoS2) is presented. It employs an energy feature obtained from time-frequency representation of the vibration signal. Extensive experimental studies are co[...]
Article : texte imprimé
H. C. Garg, Auteur ;
Vijay Kumar, Auteur ;
H. B. Sharda, Auteur
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The effect of viscosity variation due to temperature rise and non-Newtonian behavior of the lubricant on the performance of hole-entry and slot-entry hybrid journal bearings system is the focus of this investigation. The performance characterist[...]
Article : texte imprimé
A mass-conserving complementarity formulation to study lubricant films in the presence of cavitation
Matteo Giacopini, Auteur ;
Mark T. Fowell, Auteur ;
Daniele Dini, Auteur
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A new mass-conserving formulation of the Reynolds equation is developed using the concept of complementarity. This new method overcomes the drawbacks previously associated with the use of such complementarity formulations for the solution of cav[...]
Article : texte imprimé
L. Chang, Auteur
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A baseline theory is developed in this paper for the design of oil-lubricated centrally pivoted plane-pad thrust bearings. By focusing on the hydrodynamics generated by the viscosity-temperature effects of the lubricating oil, a mathematical mod[...]
Article : texte imprimé
E. Rajasekhar Nicodemus, Auteur ;
Sharma, Satish C., Auteur
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The objective of the present paper is to study analytically the influence of wear on the performance of a capillary-compensated, four-pocket, hybrid journal bearing system operating in a turbulent regime by considering various geometric shapes o[...]
Article : texte imprimé
Katsuhiro Ashihara, Auteur ;
Hiromu Hashimoto, Auteur
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In designing of engine bearings for automobiles, we need to establish a mixed lubrication model that considers the solid-to-solid contact between journal surfaces and bearing surfaces with microgroove. However, as far as we know, there is no lit[...]
Article : texte imprimé
Li-Ming Chu, Auteur ;
Jaw-Ren Lin, Auteur ;
Wang-Long Li, Auteur
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The pure squeeze magneto-elastohydrodynamic lubrication (MEHL) motion of circular contacts with an electrically conducting fluid in the presence of a transverse magnetic field is explored under constant load condition. The differences between cl[...]
Article : texte imprimé
Jun Sun, Auteur ;
Xiaoxia Cai, Auteur ;
Liping Liu, Auteur
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In this paper, the analyses of elastohydrodynamic lubrication (EHL) of crankshaft bearings considering the deformation of the whole cylinder block and crankshaft under load were carried out for the crankshaft bearing system of a four-stroke four[...]
Article : texte imprimé
Xinhong Wang, Auteur ;
Min Zhang, Auteur ;
Shiyao Qu, Auteur
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(Ti,Mo)C multiple carbide reinforced Fe-based composite coating was produced by laser melting a precursor mixture graphite, ferrotitanium (Fe–Ti), and ferromolybdenum (Fe–Mo) powders. The results showed that flowerlike and cubic type (Ti,Mo)C mu[...]
Article : texte imprimé
Scott R. Hummel, Auteur ;
Jeffrey Helm, Auteur
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Galling is a severe form of mechanical surface damage, commonly observed in metals, that is accompanied by adhesive transfer, extensive plastic deformation, and/or cold-welding of the mating surfaces. It can lead to seizure or rapid failure of m[...]
Article : texte imprimé
M. S. Patil, Auteur ;
Jose Mathew, Auteur ;
P. K. Rajendrakumar, Auteur
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The presence of defect in the bearing (outer race, inner race, or ball) results in increased vibrations. Time domain indices such as rms, crest factor, and kurtosis are some of the important parameters used to monitor the condition of the bearin[...]
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