A Dynamic Friction Law Describing Heat and Wear in Contact Zones |
| Journal |
Applied Mechanics and Materials (Volume 9) |
| Volume |
New Trends in Mechanics and Transport |
| Edited by |
Tadeusz Uhl and Andrzej Chudzikiewicz |
| Pages |
105-114 |
| DOI |
10.4028/www.scientific.net/AMM.9.105 |
| Online since |
October, 2007 |
| Authors |
Georg Peter Ostermeyer
|
| Keywords |
Dynamic Friction Law, Friction, Heat, Surface Topography, Unsteady Friction, Wear |
| Abstract |
The analysis of friction in brake systems shows a complex dynamic dependence of friction and
wear. Friction produces wear but wear affects the surface topography and by that the friction power
itself. The wear in technical brake systems causes a dynamic equilibrium of growth and destruction
of surface structures on the brake pad, carrying the friction power. This interaction between friction
and wear generates a new dynamic friction law, which describes the effects on friction, wear and
temperature on different time scales. For very slow processes the friction law reduces to the
classical form, describing only the velocity and heat dependence of friction. For unsteady processes
the dynamic friction law is able to describe and explain even complex measured friction events in
brake systems. |
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