Documents disponibles écrits par cet auteur

Analytical solution to the hydrodynamic lubrication of fan-shaped thrust step bearings / Shuangbiao Liu in Transactions of the ASME . Journal of tribology, Vol. 132 N° 2 (Avril 2010) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 132 N° 2 (Avril 2010) . - 08 p. Titre : Analytical solution to the hydrodynamic lubrication of fan-shaped thrust step bearings Type de document : texte imprimé Auteurs : Shuangbiao Liu, Auteur ; W. Wayne Chen, Auteur ; Diann Y. Hua, Auteur Année de publication : 2011 Article en page(s) : 08 p. Note générale : Tribology Langues : Anglais (eng) Mots-clés : Hydrodynamics  Laplace  equations  Lubrication  Machine  bearings Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Step bearings are frequently used in industries for better load capacities. Analytical solutions to the Rayleigh step bearing and a rectangular slider with a finite width are available in literature, but none for a fan-shaped thrust step bearing. This study starts with a known solution to the Laplace equation in a cylindrical coordinate system, which is in the form of an infinite summation. A set of analytical solutions to pressure, load capacity, flow rate, and torque loss is derived in this paper for hydrodynamic lubrication problems encountered in the fan-shaped step bearing. These analytical solutions are compared with those for the rectangular slider and the Rayleigh step bearing to reveal relationships among them. When the inner radius becomes smaller, the load capacity increases, almost linearly in a certain region. The effects of inner radius, step height, and step location on pressure distribution and load capacity are studied in general and under a specific set of bearing geometry as an example. The presented solutions can be useful for designers to maximize bearing performance as well as for researchers to benchmark numerical lubrication models. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013 [...] [article] Analytical solution to the hydrodynamic lubrication of fan-shaped thrust step bearings [texte imprimé] / Shuangbiao Liu, Auteur ; W. Wayne Chen, Auteur ; Diann Y. Hua, Auteur . - 2011 . - 08 p. Tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 132 N° 2 (Avril 2010) . - 08 p. Mots-clés : Hydrodynamics  Laplace  equations  Lubrication  Machine  bearings Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Step bearings are frequently used in industries for better load capacities. Analytical solutions to the Rayleigh step bearing and a rectangular slider with a finite width are available in literature, but none for a fan-shaped thrust step bearing. This study starts with a known solution to the Laplace equation in a cylindrical coordinate system, which is in the form of an infinite summation. A set of analytical solutions to pressure, load capacity, flow rate, and torque loss is derived in this paper for hydrodynamic lubrication problems encountered in the fan-shaped step bearing. These analytical solutions are compared with those for the rectangular slider and the Rayleigh step bearing to reveal relationships among them. When the inner radius becomes smaller, the load capacity increases, almost linearly in a certain region. The effects of inner radius, step height, and step location on pressure distribution and load capacity are studied in general and under a specific set of bearing geometry as an example. The presented solutions can be useful for designers to maximize bearing performance as well as for researchers to benchmark numerical lubrication models. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013 [...]

Hydrodynamic lubrication of thrust bearings with rectangular fixed-incline-pads / Shuangbiao Liu in Transactions of the ASME . Journal of tribology, Vol. 134 N° 2 (Avril 2012) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 134 N° 2 (Avril 2012) . - 05 p. Titre : Hydrodynamic lubrication of thrust bearings with rectangular fixed-incline-pads Type de document : texte imprimé Auteurs : Shuangbiao Liu, Auteur ; Libin Mou, Auteur Année de publication : 2012 Article en page(s) : 05 p. Note générale : tribology Langues : Anglais (eng) Mots-clés : thrust;  bearings;  hydrodynamic  lubrication;  bearing  design  and  technology Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper summarized the critical mathematical achievement of lubrication theory of fixed-incline-pad bearings in the first half of the twentieth century. Omitted steps in published papers are provided and the coresponding equations are discussed in details. A general solution is derived for this type of bearing, which contains the general solutions used in Michell and Muskat et al. It is shown that Hay's solution is actually equivalent to Muskat at al.'s solution, which can be used by design engineers to estimate the bearing performance. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE9000134000002 [...] [article] Hydrodynamic lubrication of thrust bearings with rectangular fixed-incline-pads [texte imprimé] / Shuangbiao Liu, Auteur ; Libin Mou, Auteur . - 2012 . - 05 p. tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 134 N° 2 (Avril 2012) . - 05 p. Mots-clés : thrust;  bearings;  hydrodynamic  lubrication;  bearing  design  and  technology Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper summarized the critical mathematical achievement of lubrication theory of fixed-incline-pad bearings in the first half of the twentieth century. Omitted steps in published papers are provided and the coresponding equations are discussed in details. A general solution is derived for this type of bearing, which contains the general solutions used in Michell and Muskat et al. It is shown that Hay's solution is actually equivalent to Muskat at al.'s solution, which can be used by design engineers to estimate the bearing performance. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE9000134000002 [...]