ALTERNATE SLIDING FRICTION FORMULATIONS OF ELASTO - HYDRODYNAMIC OF SPUR GEARS
Main Article Content
Abstract
In this paper, several sliding friction formulations used in spur gear dynamics are examined and compared in terms of the predictions of interfacial friction forces and off-line-of-action. Computing friction formulations include Coulomb models with time-varying friction coefficients and empirical expressions based on elasto - hydrodynamic and/or boundary lubrication regime principles. Predicted results compare well with friction force measurements and appeared completely conformed with specific objectives of this paper are established as follows: (1) propose an improved MDOF spur gear pair model with time-varying coefficient of' friction, µ(t), given realistic mesh stiffness profiles.(2) comparatively evaluate alternate sliding friction models and predict the interfacial friction forces and motions in the off-line-of-action (OLOA) direction: and (3) validate one particular model (III) by comparing predictions to the
benchmark gear friction force measurements
Article Details
How to Cite
Publication Dates
References
AGMA Information Sheet 925-A03. Effect of lubrication on gear surface distress. 2003.
Rebbechi.B., Oswald, F.B Measurement of gear tooth dynamic friction. ASME Power Transmission and Gearing Conference Proceedings, San Diego. 6-9 October 1996, DE-Vol. 88. pp.355-363.
Hamrock, B.J. Dowson , D. Isothermal elastohydrodynamic lubrication of point contacts, part III-fully flooded results. Journal of Lubrication Technology 99 (2) (1977) 264-276.
Duan, C.. Singh, R Dynamic of a 3DOF torsional system with a dry friction controlled path. Journal of sound and Vibration 289 (4-5) (2006) 657-688.
Benedict, G.H. Kelley, B.W. Instantaneous coefficients of gear tooth friction. Transactions of American Society of Lubrication Engineers 4 (1961) 59–70.
Xu, H. Kahraman A.,Prediction of mechanical effieiecy of parallel-axis gear pairs. ASME Journal of Mechanical Design 129 (1)(2007) 58-68.
Xu, H. Development of a generalized mechanical efficiency prediction methodology, PhD Dissertation (Advisor: A. Kahraman) The Ohio State University, 2005.
Vaishya, M. Singh, R.Analysis of periodically varying gear mesh systems with Coulomb friction using Floquet theory, Journal of Sound and Vibration 243 (3) (2001) 525-545.
Vaishya, M. Singh, R. Sliding friction-induced non-linearity and parametric effects in gear dynamics, Journal of Sound and Vibration 248 (4) (2001) 671- 694.
Vaishya, M. Singh, R.S Strategies for modeling friction in gear dynamics, ASME Journal of Mechanical Design 125 (2003) 383-393.
Lundvall. O. Stomberg, N, Klarbring, A. A flexible multi-body approach for frictional contact in spur gears, Journal of Sound and Vibration 278 (3) (2004) 479-499.
Velex, P. Sainsot, P. An analytical study of tooth friction excitations in spur and helical gears, Mechanism and Machine Theory 37 (2002)641-658.
Velex, P. Cahouet, V. Experimental and numerical investigations on the influence of tooth friction in spur and helical gear dynamics, ASM E Journal of Mechanieal Design 122 (4) (2000) 515-522.
.He.R.Gunda, S Single R., Effect of sliding friction on the dynamics of spur gear pair with realistic times- varying stiffness, Journal of Sound and Vibration 301 (3 - 5) (2007) 927–949.
Xu ,E,A ,Non _Newtonian Thermal design of fricition formula in spur gears 2110 (4) (1972)