The student attending this course should: • Examine the complexities of lubrication process and its importance in the construction of the main tribological elements; • Get familiar with the standards for the calculation of main tribological elements; • Learn the basic principles of main lubrication types and how they should be applied in the design process.

On the basis of mastered knowledge the student is qualified to: • Analyze fundamental aspects of boundary lubrication; • Analyze fundamental aspects of mixed lubrication; • Analyze fundamental aspects of hydrodynamic lubrication; • Analyze fundamental aspects elastohydrodynamic lubrication; • Analyze fundamental aspects of hydrostatic lubrication; • Define the basic assumptions for the calculation of main tribological systems, according to standards, and based on the lubrication theories.

The introductory section includes a definition of the lubrication process, forms and types of lubrication and lubricant rheology. Fundamental aspects of lubrication, defined by Reynolds equation, and the study of its solutions: theory of infinite length bearing, short bearing and bearing with finite length. Calculation methods that use hydrostatic, gasostatic, hydrodynamic, gasodinamic and elastohydrodinamic lubrication theory. In particular, boundary and mixed lubrication are studied, including the study of lubricants in these conditions.

Preparing of the seminar paper.

No special requirements.

1. A. Rac, Fundamentals of Tribology, Faculty of Mechanical Engineering, Belgrade, 1991, (in Serbian). 2. A. Rac, Lubricants and Machine Lubrications, Faculty of Mechanical Engineering, Belgrade, 2007, (in Serbian). 3. J. Halling, Principles of Tribology, The MacMillan Press, London, 1975. 4. O. Pinkus, B. Sternlicht, Theory of Hydrodynamic Lubrication, McGraw-Hill, New York, 1961. 5. Y. Hori, Hydrodynamic Lubrication, Springer, Tokyo, 2006. 6. B.J. Hamrock, S.R. Schmid, B.O. Jacobson, Fundamentals of Fluid Film Lubrication, Marcel Dekker, New York, 2004. 7. D. Dowson, G.R. Higginson, Elasto-Hydrodinamic Lubrication, Pergamon Press, Oxford, 1977.

Total assigned hours: 65

New material: 40
Elaboration and examples (recapitulation): 10

Auditory exercises: 0
Laboratory exercises: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 0
Review and grading of lab reports: 0
Review and grading of seminar papers: 10
Review and grading of the project: 0
Test: 0
Test: 0
Final exam: 5

Activity during lectures: 0
Test/test: 0
Laboratory practice: 0
Calculation tasks: 0
Seminar paper: 70
Project: 0
Final exam: 30
Requirement for taking the exam (required number of points): 35

A.Z. Szeri, Tribology: Friction, Lubrication, and Wear, McGraw-Hill, New York, 1980.; D. Dowson, C.M. Taylor, M. Godet, D. Berthe (Eds.), Developments in Numerical and Experimental Methods Applied to Tribology, Butterworths, London, 1983.; W.A. Gross, L.A. Matsch, V. Castelli, A. Eshel, J.H. Vohr, M. Wildmann, Fluid Film Lubrication, John Wiley & Sons, New York, 1980.; O.R. Lang, W. Steinhilper, Gleitlager, Springer, Berlin, 1978.; S. Bair, High Pressure Rheology for Quantitative Elastohydrodynamics, Elsevier, Amsterdam, 2007.