Stationary Position for Hybrid Journal Bearing with Horizontal Point Injection Ports


Article Preview

This paper deals with the modeling and identification of a stationary eccentricity and attitude angle for a short journal bearing with horizontal point injection port. In modeling we use the Dirac spatial delta function which allows to obtain a pressure field in a close analytical form. After using the pressure force components in the oil film, which is the addition of the Ocvirck force in the classic case and pressure force we obtain a non linear equations system with respect to stationary eccentricity and attitude angle. We found the solution equation system by obtaining the roots using the program MATHEMATICA 6 and by iteration. We developed and analyzed the work by both point pressurizing ports π/2 and 3π/2 in the journal bearing. The results are presented in tables that show the relation between eccentricity, attitude angle and the Sommerfeld´s number S.



Main Theme:

Edited by:

Alexander Balankin, José Martínez Trinidad and Orlando Susarrey Huerta




V.R. Nossov et al., "Stationary Position for Hybrid Journal Bearing with Horizontal Point Injection Ports", Key Engineering Materials, Vol. 449, pp. 29-36, 2010

Online since:

September 2010




[1] Bently D, Petchnev (2000), Dynamic Stiffness and Advantages Of Externally Pressurized Fluid Film Bearings", Orbit, First Quarter.

[2] Gómez-Mancilla, V.R. Nossov, Ordoñez-Pantoja A., (2003).

[3] Gómez-Mancilla, V. Nossov, G. Silva-Navarro. (2005) Rotor Bearing System Stability Performance Comparing Hybrid versus Conventional Bearings, International Journal of Rotating Machinery, No. 1, pp.16-22.


[4] Nossov V.,. Gómez-Mancilla J.C., Ramirez Vargas I. (2008) HIBRID JOUR, AL BEARI, GS WITH I, JECTIO, PORTS. Fifth International Conference on Mathematical Modeling and Computer Simulation of Material Technologies- MMT 2008, Israel, vol. 2, pp.7-71.

[5] J. Gomez-Mancilla, V.R. Nossov, I. Ramirez-Vargas , ew model and Stationary Position for a Short Journal Bearing with Upper Point Injection Ports,. 7th IFToMM Conference on Rotor Dynamics, Vienna, Austria, 25-28 September (2006).


[6] Nossov V.R., Ramírez-Vargas, Gómez-Mancilla J.C., (2005) USO DE FU, CIO, ES GE, ERALIZADAS ESPACIALES E, MODELOS ROTODI, AMICOS CO, PRESURIZACIÓ,. Memorias del 1er Taller Internacional de Matemáticas Aplicadas CD de México, pp.14-26.