A contact stiffness model of machined plane joint based on fractal theory / Jiang, Shuyun in Transactions of the ASME . Journal of tribology, Vol. 132 N° 1 (Janvier 2010)  

Public ISBD [article]  inTransactions of the ASME . Journal of tribology > Vol. 132 N° 1 (Janvier 2010) . - 07 p. Titre : A contact stiffness model of machined plane joint based on fractal theory Type de document : texte imprimé Auteurs : Jiang, Shuyun, Auteur ; Zheng, Yunjian, Auteur ; Zhu, Hua, Auteur Année de publication : 2010 Article en page(s) : 07 p. Langues : Anglais (eng) Mots-clés : Machined plane join surfaces Normal contact stiffness Tangential Fractal theory Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : A general contact stiffness model is proposed in this paper to study the contacts between rough surfaces of machined plane joints. The proposed model uses fractal geometry for surface topography description, elastic-plastic deformation of contacting asperities, and size-dependent contact stiffness of microcontacts, where the contact stiffness is derived from Hertz contact theory. Three cast iron specimens are produced from different machining methods (milling, grinding, and scraping), and their rough surface profiles are extracted. The structure function method was used to calculate each profile's fractal dimension and scale coefficient. Both theoretical analysis and experimental results of contact stiffness are obtained for these specimens under different contact loads. The comparison between the theoretical contact stiffness and the experimental results at the interface indicates that the present fractal model for the contact stiffness is appropriate and the theoretical contact stiffness is consistent with the experimental data. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013200 [...] [article] A contact stiffness model of machined plane joint based on fractal theory [texte imprimé] / Jiang, Shuyun, Auteur ; Zheng, Yunjian, Auteur ; Zhu, Hua, Auteur . - 2010 . - 07 p. Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 132 N° 1 (Janvier 2010) . - 07 p. Mots-clés : Machined plane join surfaces Normal contact stiffness Tangential Fractal theory Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : A general contact stiffness model is proposed in this paper to study the contacts between rough surfaces of machined plane joints. The proposed model uses fractal geometry for surface topography description, elastic-plastic deformation of contacting asperities, and size-dependent contact stiffness of microcontacts, where the contact stiffness is derived from Hertz contact theory. Three cast iron specimens are produced from different machining methods (milling, grinding, and scraping), and their rough surface profiles are extracted. The structure function method was used to calculate each profile's fractal dimension and scale coefficient. Both theoretical analysis and experimental results of contact stiffness are obtained for these specimens under different contact loads. The comparison between the theoretical contact stiffness and the experimental results at the interface indicates that the present fractal model for the contact stiffness is appropriate and the theoretical contact stiffness is consistent with the experimental data. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013200 [...]

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