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On elastic interaction of nominally flat rough surfaces / A. Sepehri in Transactions of the ASME . Journal of tribology, Vol. 130 N°1 (Janvier 2008) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 130 N°1 (Janvier 2008) . - 5 p. Titre : On elastic interaction of nominally flat rough surfaces Type de document : texte imprimé Auteurs : A. Sepehri, Auteur ; K. Farhang, Auteur Année de publication : 2008 Article en page(s) : 5 p. Note générale : Tribology Langues : Anglais (eng) Mots-clés : Force  Separation  (Technology)  Surface  roughness  Stress  Optimization  Approximation  Equations  Errors Résumé : A hybrid interactive/optimization technique is used to derive in approximate closed-form equations relating contact load to mean plane separation. Equations governing Hertz contact for the interaction of surface asperities are considered in which asperity shoulder-to-shoulder contact results in normal and tangential components of force. The normal component of asperity force is summed statistically to find total normal force between the two surfaces. The tangential force over a half-plane corresponding to a select direction is found accounting for the directionality of the tangential component of asperity forces. Two sets of approximate equations are found for each of the normal and half-plane tangential force components. The simplest forms of the approximate equations achieve accuracy to within 5% error, while other forms yield approximation error within 0.2%. En ligne : http://tribology.asmedigitalcollection.asme.org/article.aspx?articleid=1467980 [article] On elastic interaction of nominally flat rough surfaces [texte imprimé] / A. Sepehri, Auteur ; K. Farhang, Auteur . - 2008 . - 5 p. Tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 130 N°1 (Janvier 2008) . - 5 p. Mots-clés : Force  Separation  (Technology)  Surface  roughness  Stress  Optimization  Approximation  Equations  Errors Résumé : A hybrid interactive/optimization technique is used to derive in approximate closed-form equations relating contact load to mean plane separation. Equations governing Hertz contact for the interaction of surface asperities are considered in which asperity shoulder-to-shoulder contact results in normal and tangential components of force. The normal component of asperity force is summed statistically to find total normal force between the two surfaces. The tangential force over a half-plane corresponding to a select direction is found accounting for the directionality of the tangential component of asperity forces. Two sets of approximate equations are found for each of the normal and half-plane tangential force components. The simplest forms of the approximate equations achieve accuracy to within 5% error, while other forms yield approximation error within 0.2%. En ligne : http://tribology.asmedigitalcollection.asme.org/article.aspx?articleid=1467980