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A simple method to calculate contact factor used in average flow model / Fanming Meng in Transactions of the ASME . Journal of tribology, Vol. 132 N° 2 (Avril 2010) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 132 N° 2 (Avril 2010) . - 04 p. Titre : A simple method to calculate contact factor used in average flow model Type de document : texte imprimé Auteurs : Fanming Meng, Auteur ; Q. Jane Wang, Auteur ; Diann Hua, Auteur Année de publication : 2011 Article en page(s) : 04 p. Note générale : Tribology Langues : Anglais (eng) Mots-clés : Density  functional  theory  Mechanical  contact  Rough  surfaces Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The average flow model proposed by Patir and Cheng offers a great convenience for the analysis of rough surfaces in lubrication. The contact factor introduced by Wu and Zheng helps to solve a difficulty in local film evaluation using the average flow model. This paper reports a simple method to calculate the contact factor. Method validation is demonstrated by the comparison of the contact factors for Gaussian surfaces obtained with the present method and the fitting formula of Wu and Zheng. The proposed method cannot only easily compute the contact factor values for Gaussian surfaces; it can also be used for those of non-Gaussian and measured surfaces, especially those with unknown probability density distribution of the roughness height. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013 [...] [article] A simple method to calculate contact factor used in average flow model [texte imprimé] / Fanming Meng, Auteur ; Q. Jane Wang, Auteur ; Diann Hua, Auteur . - 2011 . - 04 p. Tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 132 N° 2 (Avril 2010) . - 04 p. Mots-clés : Density  functional  theory  Mechanical  contact  Rough  surfaces Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The average flow model proposed by Patir and Cheng offers a great convenience for the analysis of rough surfaces in lubrication. The contact factor introduced by Wu and Zheng helps to solve a difficulty in local film evaluation using the average flow model. This paper reports a simple method to calculate the contact factor. Method validation is demonstrated by the comparison of the contact factors for Gaussian surfaces obtained with the present method and the fitting formula of Wu and Zheng. The proposed method cannot only easily compute the contact factor values for Gaussian surfaces; it can also be used for those of non-Gaussian and measured surfaces, especially those with unknown probability density distribution of the roughness height. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013 [...]