Transactions of the ASME . Journal of tribology, Vol. 132 N° 1. Journal of tribology : transactions of the ASME - Janvier 2010
| Titre : | Transactions of the ASME . Journal of tribology, Vol. 132 N° 1. Journal of tribology : transactions of the ASME - Janvier 2010 |
| Type de document : | Bulletin |
| Paru le : | 03/11/2010 |
Dépouillements
Article : texte imprimé
Ohta, Hiroyuki, Auteur ;
Matsuura, Kazuya, Auteur ;
Kato, Soichiro, Auteur ;
Igarashi, Yutaka
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This paper deals with vibrations and acoustic emissions (AEs) of linear-guideway type recirculating ball bearings with a millimeter-sized artificial defect in the carriage. The vibration and AE of one normal bearing without a defect (Type N), an[...]
Article : texte imprimé
Ohta, Hiroyuki, Auteur ;
Tanaka, Keisuke, Auteur
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This article deals with the vertical stiffnesses of preloaded linear guideway type ball bearings (linear bearings) incorporating the flexibility of the carriage and rail. First the vertical stiffnesses of light and medium preloaded linear bearin[...]
Article : texte imprimé
Bakker, O. J., Auteur ;
van Ostayen, R. A. J., Auteur
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Inertial effects due to the centripetal forces may become dominant at high rotational speeds in hydrostatic thrust bearings. Although this influence has been recognized in literature, bearings are commonly optimized with respect to the minimum f[...]
Article : texte imprimé
Aphale, Chinar R., Auteur ;
Schultz, William W., Auteur ;
Ceccio, Steven L., Auteur
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Article : texte imprimé
Miroslav Hlavacek, Auteur
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Human ankle joint lubrication in walking is analyzed. A biphasic mixture model is considered for articular cartilage (ideal interstitial fluid and elastic porous matrix that is transversely isotropic and inhomogeneous throughout its thickness). [...]
Article : texte imprimé
Jiang, Shuyun, Auteur ;
Zheng, Yunjian, Auteur ;
Zhu, Hua, Auteur
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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 contac[...]
Article : texte imprimé
Li, S., Auteur ;
Kahraman, A., Auteur
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In this study, a transient, non-Newtonian, mixed elastohydrodynamic lubrication (EHL) model of involute spur gear tooth contacts is proposed. Unlike the contact between two cylindrical rollers, spur gear contacts experience a number of time-vary[...]
Article : texte imprimé
Jung, Ki-Ho, Auteur ;
Lee, Hyun-Chul, Auteur ;
Ajiboye, Joseph S., Auteur
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In the present investigation, a tip test based on upsetting and backward extrusion was utilized to characterize the effect of surface roughness of the billet and forming tools, and the type of lubricants on friction. For the test, cylindrical sp[...]
Article : texte imprimé
Tae Ho Kim, Auteur ;
Luis San Andrés, Auteur
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An engineered thermal management is fundamental to the application of gas foil bearings (GFBs) as turboshaft supports in rotorcraft propulsion systems. The paper presents a model for the thermal energy transport in a rotor-GFB system operating a[...]
Article : texte imprimé
J. Y. Jang, Auteur ;
M. M. Khonsari, Auteur
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Misalignment affects nearly all the bearing performance parameters including the cavitation, thermal field, leakage flow-rate, and moments. The present paper provides a comprehensive analysis of misaligned journal bearings based on a three-dimen[...]
Article : texte imprimé
Hiromu Hashimoto, Auteur ;
Masayuki Ochiai, Auteur
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This paper describes the stabilization method for small-bore circular journal bearings using starved lubrication. First, we describe the experimental examination to confirm the effect of supply oil conditions on stability of circular journal bea[...]
Article : texte imprimé
Jun Sun, Auteur ;
Mei Deng, Auteur ;
Yonghong Fu, Auteur
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Journal misalignment exists generally in journal bearings. When severe journal misalignment takes place, the minimum film thickness of journal bearings reduces greatly. In this condition, the surface roughness, the oil viscosity-pressure relatio[...]
Article : texte imprimé
Sy-Wei Lo, Auteur ;
Tzu-Chun Yang, Auteur ;
Yong-An Cian, Auteur
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A model for oil-in-water emulsion has been developed in this paper. A group of viscosity coefficients transiting smoothly and incessantly from the thick film region to the thin film region is defined. The contributions from disperse and continuo[...]
Article : texte imprimé
Du Chen, Auteur ;
David B. Bogy, Auteur
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Near or partial contact sliders are designed for the areal recording density of 1 Tbit/in.2 or even higher in hard disk drives. The bouncing vibration of an air bearing-slider in near or partial contact with the disk is numerically analyzed usi[...]
Article : texte imprimé
H. Sojoudi, Auteur ;
M. M. Khonsari, Auteur
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A simple but realistic dynamic friction model for the lubricated sliding contact is developed based on decoupling the steady and unsteady terms in Reynolds equation. The model realistically captures the physics of friction behavior both when spe[...]
Article : texte imprimé
H. Sojoudi, Auteur ;
M. M. Khonsari, Auteur
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This paper presents a simple approach to predict the behavior of friction coefficient in the sliding lubricated point contact. Based on the load-sharing concept, the total applied load is supported by the combination of hydrodynamic film and asp[...]
Article : texte imprimé
T. V. V. L. N. Rao, Auteur
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In this paper, pressure and shear stress are derived under steady state using one-dimensional analysis of the single-grooved slider bearing and journal bearing with partial slip on the stationary surface. The Reynolds boundary conditions are use[...]
Article : texte imprimé
Yaser Bastani, Auteur ;
Marcio de Queiroz, Auteur
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A new method for determining a closed-form expression for the hydrodynamic forces in finite-length plain journal bearings is introduced. The method is based on applying correction functions to the force models of the infinitely long (IL) or infi[...]
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