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By D. Dowson, C.M. Taylor, T.H.C. Childs, M. Godett and G. Dalmaz (Eds.)

This article discusses dissipative phenomena, particularly the origins of friction in any respect scales, in mechanics, physics and chemistry, encountered in all fields of tribology, from thick movie lubrication to dry friction.

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Extra resources for Dissipative Processes in Tribology, Proceedings of the 20th Leeds-Lyon Symposium on Tribology held in the Laboratoire de Mécanique des Contacts, Institut National des Sciences Appliquées de Lyon

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Contacts," Trans. ASME, Journal Tribology, 113, 3, p. 647, (1991). of 13. Bair, S. and Winer, W. 0.. , 36, 4, (1993). FIGURES 14. Tanner, R. , Engineering Rheology, Clarendon Press, Oxford, p. 237, (1985). Figure 2. Flow birefrigence in 5P4E at 23"C, 241 MPa. 15. Hutton, J. , "Theory of Rheology," Interdisciplinary Approach to Liquid Lubricant Technology, Edited by P. M. Ku, NASA, p. 206-207, (1972). Figure 3. Time for which a shear band is visible. 16. Elsharkawy, A. A. and I-Ianuock. B.

Then the non-linear behavior which was introduced previously through F is a consequence of the distribution of q through tlie material and tlie slip velocity. For simple cases where the flow is steady simple shear, an empirical stress equation such as we have advanced t = t,(l-e -CIflr') + -F(Tg,t,) (9) where K is now the bulk modulus of the glass and p,. is that pressure which yields tlie inst'antnneous density of the liquid when used in the equilibrium is sufficient. Here the rate sensitivity coefficient, m, goes to zero as py/zL becomes large.

34. A. J. T. W. Brenner, Wear, 168 (1993) 127. 35. A. T. J. W. Brenner, J. Phys. , J. Phys. Chem. fl (1993) 6573. 36. A. T. J. W. Brenner, Surf. , 271 (1992) 57. 37. Donald H. Buckley, Surface Effects in Adhesion. Friction. Wear. and Lubrication (Elsevier, New York, 1981). pp. 357-373. 38. M. Hirano, K. Shinjo, R. Kaneko and Y. Murata, Phys. Rev. , 67 (1991) 2642. 39. A. Harrison, private communication, 1993. 40. H. Yoshizawa, Y-L. Chen and J. Israelachvili, J. Phys. , 97 (1993) 4128. 41. Y-L. A.

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