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A cellular automaton model for boundary friction of PEEK and PEEK6
Author(s) -
Bubser Florian,
Ostermeyer G.P.
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110221
Subject(s) - peek , materials science , cellular automaton , composite number , boundary (topology) , surface (topology) , homogeneous , composite material , dependency (uml) , computer science , geometry , mathematics , physics , algorithm , statistical physics , mathematical analysis , polymer , artificial intelligence
Nowadays a common material for journal bearings is PEEK (Polyetheretherketon) which is increasingly used under boundary friction. A Cellular Automaton model is developed to describe the boundary layer dynamics of PEEK and its composite PEEK6 sliding against a steel surface. Whereas PEEK is a homogeneous synthetic material, PEEK6 contains also carbon fibres for stability and fillers working as solid lubricants. The automaton shows a representative area of the real surface. The processes in the interface are described by a set of rules based on physical assumptions and measurements. Based on these rules the simulations show the dependency of friction and wear on the load spectrum. The discrete simulation allows to observe the topographic development of the PEEK and PEEK6 surface as well as the build‐up of a transfer film on the steel surface. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)