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The Application of Systems Thinking and Systems Analysis to Tribology

  • Two introductory reports on a Systems approach to tribology, refs (1) and (2), have been discussed at the previous meeting of IRG-OECD (London, 1973). The new concepts derived from General Systems Theory, and Mathematical Systems Analysis are combined in the present report and applications in tribology are worked out in greater detail. In introducing the subject it is pointed out once more: (i) all tribo-mechanisms are by definition complex Systems; (ii) friction and wear are operators of tribo-systems (in terms of either a verbal or a mathematical theory of sets); (ii) therefore friction coefficients and wear rates cannot be instrinsic material properties. The nature of complexity in the verbal description of tribo-mechanisms is analyzed, and logical ruies, needed in the analytical procedure, are given;the mathematics are summarized in the Appendix. A general classification of tribo-mechanisms is developed by step-wise analysis, and mathematical expressions forTwo introductory reports on a Systems approach to tribology, refs (1) and (2), have been discussed at the previous meeting of IRG-OECD (London, 1973). The new concepts derived from General Systems Theory, and Mathematical Systems Analysis are combined in the present report and applications in tribology are worked out in greater detail. In introducing the subject it is pointed out once more: (i) all tribo-mechanisms are by definition complex Systems; (ii) friction and wear are operators of tribo-systems (in terms of either a verbal or a mathematical theory of sets); (ii) therefore friction coefficients and wear rates cannot be instrinsic material properties. The nature of complexity in the verbal description of tribo-mechanisms is analyzed, and logical ruies, needed in the analytical procedure, are given;the mathematics are summarized in the Appendix. A general classification of tribo-mechanisms is developed by step-wise analysis, and mathematical expressions for friction and wear processes in steady state Systems are given. The recent experimental advances made by IRG-OECD (refs (15) and (16)) on failure criteria in thin film lubrication are presented in the terminology of Systems analysis, but merely äs an example for the formalization of non-linear tribo-processes. It is concluded that neither the verbal nor the mathematical Systems analysis have, at present, more predictive power than a conventional Interpretation of experimental results. However, dangerous logical errors in the concepts of friction and wear can now be eliminated and, by doing so, a new outlook on tribometry is gained. The practical engineering consequences for the future, functional control of tribo-machinery have already been predicted by Schlösser (ref. 18).zeige mehrzeige weniger

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Metadaten
Autor*innen:Horst Czichos, Geert Salomon
Dokumenttyp:Forschungsbericht
Veröffentlichungsform:Eigenverlag BAM
Schriftenreihe (Bandnummer):BAM Forschungsberichtreihe (30)
Sprache:Englisch
Jahr der Erstveröffentlichung:1974
Veröffentlichende Institution:Bundesanstalt für Materialforschung und -prüfung (BAM)
Verlag:Bundesanstalt für Materialprüfung (BAM)
Verlagsort:Berlin
Jahrgang/Band:30
Erste Seite:1
Letzte Seite:22
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Technik / Technik, Technologie
URN:urn:nbn:de:kobv:b43-4207
ISSN:0938-5533
Verfügbarkeit des Dokuments:Datei für die Öffentlichkeit verfügbar ("Open Access")
Lizenz (Deutsch):License LogoAllgemeines Deutsches Urheberrecht
Datum der Freischaltung:23.01.2015
Referierte Publikation:Nein
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