THE DEFINITION OF TORQUE IN SYSTEMS OF GREASE WITH CONICAL CLEARANCE

Олексій Дмитрович Коваль, Микола Васильович Ногін, Фаршад Разави

Abstract


This article attempts to conduct research that related with the studying of grease flow in conical clearance, providing rotation of the inner cone with predetermined frequency. Moreover, presented decision of the definition of torque in the conical clearance and compared with the similar result of the clearance between rotating coaxial cylinders. The experiments were conducted on a modernized for this purpose rotary viscometer. Glycerin and various types of grease were used as working liquids. The results can solve the problem of hydraulic resistance movement of grease in the conical clearance, which associated with rheological properties of grease environments. In our opinion, this is actual for the consideration of problems for a number of grease units, especially in considering features of hydrodynamics in the slotted conical clearances, where is the fundamental importance of the friction force between the rotating surfaces.

Keywords


lubrication system; conical clearance; torque; rotating cone

References


Voskresenskij, V.A. and D'jakov, V.I. (1980), Raschjot i proektirovanie opor skol'zhenija (zhidkostnaja smazka) [Calculation and design of sliding bearings (liquid lubricant)], Mashinostroenie, Moscow, Russia.

Targ, S.M. (1951), Osnovnye zadachi teorii laminarnyh techenij [The main tasks of the theory of laminar flow], Gostehteorizdat, Moscow, Russia.

Garg, H.С., Kumar, V. and Sharda H.B. (2009), Thermohydrostatic analysis of capillary compensated symmetric hole-entry hybrid journal bearing operating with non-Newtonian lubricant. Industrial Lubrication and Tribology. Vol. 61, no. l.

Gecim, B.A. (1990), Non-Newtonian Effect of Multigrade Oils on Journal Bearing Perfomance, Tribology Transaction. Vol.3.

Li, X.K., Gwynllyw, D.Rh., Davies, A.R. and Phillips T.N. (2000), On the influence of lubricant on dynamics of two-dimensional journal bearings. Non-Newtonian Fluid Mech. Vol. 93.

Paranjpe, R.S. (1992), Analysis of Non-Newtonian Effects in Dynamically Loaded Finite Journal Bearings Including Mass Conserving Cavitation. Trans ASME Jour of Trib. Vol. 114.

Williamson, B.P., Bates, T.W., Coy, R.C. and Milton, A.L. (1997), The viscoelastic properties of multigrade oils and their effect on journal-bearing characteristics. Non-Newtonian Fluid Mech. Vol. 73.

Vinogradov, G.V., Belkin, I.M., Vinogradov, G.V. and Leonov A.I. (1968), Rotacionnye pribory. Izmerenie vjazkosti i fiziko - mehanicheskih harakteristik materialov [Rotary power devices. Measurement of viscosity and physical - mechanical characteristics], in Vinogradov, G.V.(ed.), Mashinostroenie, Moscow, Russia.


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DOI: http://dx.doi.org/10.20535/2305-9001.2016.78.79011

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Copyright (c) 2017 Олексій Дмитрович Коваль, Микола Васильович Ногін, Фаршад Разави

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