Abstract
This study uses an elastohydrodynamic lubrication model coupled with multi-flexible-body dynamics (MFBD) to analyze dynamic bearing lubrication characteristics, such as pressure distribution and oil film thickness. To solve the coupled fluid-structure interaction system, this study uses an MFBD solver and an elastohydrodynamics module. The elastohydrodynamics module passes its force and torque data to the MFBD solver, which can solve general dynamic systems that include rigid and flexible bodies, joints, forces, and contact elements. The MFBD solver analyzes the positions, velocities, and accelerations of the multi-flexible-body system while incorporating the pressure distribution results of the elastohydrodynamics module. The MFBD solver then passes the position and velocity information back to the elastohydrodynamics solver, which reanalyzes the force, torque, and pressure distribution. This iteration is continued throughout the analysis time period. Other functions, such as mesh grid control and oil hole and groove effects, are also implemented. Numerical examples for bearing lubrication systems are demonstrated.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
Bae, D. S., Han, J. M., Choi, J. H. and Yang, S. M. (2001). A generalized recursive formulation for constrained flexible multibody dynamics. Int. J. Numerical Methods in Engineering, 50, 1841–1859.
Choi, J. (2009). A Study on the Analysis of Rigid and Flexible Body Dynamics with Contact. Ph. D. Dissertation. Seoul Nat’l University. Seoul. Korea.
Chung, G. and Hulbert, G. M. (1993). A time integration algorithm for structural dynamics with improved numerical dissipation: Ther generalized-α method. Trans. ASME, J. Applied Mechanics 60,2, 371–375.
Dowson, D. and Higginson, G. R. (1959). A numerical solution to the elastohydrodynamic problem. J. Mech. Eng. Sci., 1, 6–15.
Dowson, D. and Higginson, G. R. (1977). Elastohydrodynamic Lubrication. SI Edn. Chapter 6. Pergamon Press. Oxford.
García de Jalón, D. J., Unda, J. and Avello, A. (1986). Natural coordinates for the computer analysis of multibody systems. Computer Methods in Applied Mechanics and Engineering, 56, 309–327.
Gohar, R. (2001). Elastohydrodynamics. 2nd Edn. Imperial College Press. London.
Greenwood, J. A. and Tripp, J. H. (1971). The contact of two nominally flat rough surfaces. Proc. Instn. Mech. Engrs., Part 1, 185,48, 625–633.
Hahn, H. W. (1957). Das Zulindrische Gleitlager endlicher Breite unter zeitlich veranderlicher Belastung. Diss. TH. Karlsruhe. Germany.
Hamrock, B. J. and Dowson, D. (1976). Isothermal elastohydrodynamic lubrication of point contacts, Part I, Theoretical Formulation. ASME J. Lubr. Technol., 98, 223–229.
Labouff, G. A. and Booker, J. F. (1985). Dynamically loaded journal bearings: A finite element treatment for rigid and elastic surfaces. ASME, J. Tribology 107,4, 505–515.
Nakayama, K., Morio, I., Katagiri, T. and Okamoto, Y. (2003). A study for measurement of oil film thickness on engine bearing by using laser induced fluorescence (LIF) method. SAE Int.
Oh, K. P. and Goenka, P. K. (1985). The elastohydrodynamic solution of journal bearings under dynamic loading. ASME, J. Tribology 107,3, 389–395.
Ott, H. H. (1948). Zylindrische Gleitlager unter instationarer Belastung. Diss. ETH. Zurich.
Patankar, S. V. (1980). Numerical Heat Transfer and Fluid Flow. Hemisphere. Washington.
Peiskammer, D., Riener, H., Prandstotter, M. and Steinbatz, M. (2002). Simulation of motor components: Intergration of EHD — MBS — FE — Fatigue. ADAMS User Conf..
RecurDyn™ Manual (2010). http://www.functionbay.co.kr, FunctionBay, Inc..
Reynolds, O. (1986). On the theory of lubrication and its application to Mr. Beauchamp tower’s experiments, including an experimental determination of the viscosity of olive oil. Phil. Trans. Roy. Soc., 177, 157–234.
Riener, H., Prandstotter, M. and Witteveen, W. (2001). Conrod Simulation: Integration on EHD — MBS — FE — Fatigue. ADAMS User Conf..
Sabersky, R. H., Acosta, A. J. and Hauptmann, E. G. (1989). Fluid Flow: A First Course in Fluid Mechanics. 3rd Edn. Maxwell Macmillan Int. Edn. New York.
Jang, S. and Park, Y. (2005). Study on the effect of aerated lubricant on the journal trace in the engine bearing clearance. Int. J. Automotive Technology 6,4, 421–427.
Taylor, C. M. (1993). Engine Tribology. Elsevier. Netherlands. 75–87.
Wittenburg, J. (1977). Dynamics of Systems of Rigid Bodies. B. G. Teubner. Stuttgart.
Zhu, D. and Cheng, H. S. (1998). Effect of surface roughness on the point contact EHL. Trans. ASME, J. Tribology, 110, 32–37.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Choi, J., Kim, S.S., Rhim, S.S. et al. Numerical modeling of journal bearing considering both elastohydrodynamic lubrication and multi-flexible-body dynamics. Int.J Automot. Technol. 13, 255–261 (2012). https://doi.org/10.1007/s12239-012-0022-7
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12239-012-0022-7