By F. F. Ling, C. H. T. Pan (auth.)
At the realization of the convention on Tribology within the region of damage existence Pre diction of Mechanical elements, which used to be held on the common cars study Laboratories and backed via the commercial study Institute, a truly excessive pri ority advice was once modeling of tribological structures. because the visual appeal of the convention court cases in 1985, the writers mentioned the problem of modeling with Dr. Edward A. Saibel, leader of the cast Mechanics department, Engineering Sciences department, U.S. military study place of work. This dialogue resulted in an offer for the Workshop which ended in this quantity. the alternative of concept and Workshop identify became out to be extra limited than it had to be. As such, the Workshop followed the identify for this quantity, methods to Modeling of Friction and put on. by means of layout, the attendance used to be constrained not to greater than forty contributors as a way to enable small crew discussions. there have been 4 panels which deliberated at the comparable questions after invited zone lectures. part 1 includes the substance of the 2 lectures. part 2 is the Workshop precis that is a distillation of the 4 panel reviews via the full Workshop attendance. This was once officially written up and edited through the 8 panel consultation chairmen, i.e., all the 4 panels met two times on diversified questions less than the management of a md for every consultation. part three includes 4 short place papers with reference to the Workshop.
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Additional info for Approaches to Modeling of Friction and Wear: Proceedings of the Workshop on the Use of Surface Deformation Models to Predict Tribology Behavior, Columbia University in the City of New York, December 17–19, 1986
A high dwell time is obviously synonymous with low flow. Two conclusions can be drawn from this analysis: 1) Wear is governed by contact dwell time. The parameters which control dwell times must be identified to model wear. More concretely, wear is controlled by particle ejection. , as that list is insufficient to describe the entire wear process. VI. DWELL TIMES AND FLOW UNDER STEADY-STATE CONDITIONS Identifying today third-body dwell time as the governing parameter which has to be considered in any attempt at modeling wear, is certainly very helpful as it focusses the attention on one aspect of the problem which encompasses surface physics, material science and mechanics, which we know playa part in this very complicated and elusive process.
26. 1 et Rupture," B. Villechaise, These de Doctorat-es-Sciences, INSA-UCB, Lyon, December 1985. 27. "Boundary Conditions in a Two-Body Contact Formed by a Rectangular Polyurethane Slab Pressed Against an Araldite Plane," R. Progri, B. Villechaise and M. Godet, Journal of Tribology, Transactions of the American Society of Hechanical Engineers, 107, 138-141 (1985). 28. "Fracture Mechanics and Initial Displacements," R. Progri, B. Villechaise and M. Godet, in Hechanisms and Surface Distress, D. Dowson, C.
It should be noted that, for completeness, fluid film lubrication regime was entered above. Fluid film lubrication, unlike the other regimes, has been most thoroughly modeled through the years. As such, within the context of the Workshop, modeling of fluid film regime is not being considered. Of course, wear due to transient conditions of start/stop is boundary lubrication and mixed lubrication which needs to be modeled. Also organo-metallics from oxidation and wear particles flow with the lubricant which cause accelerated wear; this class of phenomena needs to be modeled.