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Modeling of a thermal-electrical-mechanical coupled field contact / R. P. Hennessy in Transactions of the ASME . Journal of tribology, Vol. 134 N° 04 (Octobre 2012) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 134 N° 04 (Octobre 2012) . - 08 p. Titre : Modeling of a thermal-electrical-mechanical coupled field contact Type de document : texte imprimé Auteurs : R. P. Hennessy, Auteur ; N. E. McGruer, Auteur ; G. G. Adams, Auteur Année de publication : 2012 Article en page(s) : 08 p. Note générale : tribology Langues : Anglais (eng) Mots-clés : switch  contacts;  electrical  contacts;  thermal-electrical-mechanical  coupling Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper presents a finite element approach for modeling a thermal-electrical-mechanical coupled-field contact comprised of an elastic hemisphere pressed against an elastic half-space. The goal of this investigation is to develop a fundamental understanding of the behavior of this multiphysics contact, with a particular interest on the contact area through which current flows. The results from the model illustrate a distinct difference in contact behavior between force control and displacement control in the presence of an applied electrical potential/current. It is shown that, while Hertz contact theory can be used to accurately predict the behavior of the contact under force control, a new relationship is established to accurately predict the behavior of the contact under displacement control. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE9000134000004 [...] [article] Modeling of a thermal-electrical-mechanical coupled field contact [texte imprimé] / R. P. Hennessy, Auteur ; N. E. McGruer, Auteur ; G. G. Adams, Auteur . - 2012 . - 08 p. tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 134 N° 04 (Octobre 2012) . - 08 p. Mots-clés : switch  contacts;  electrical  contacts;  thermal-electrical-mechanical  coupling Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper presents a finite element approach for modeling a thermal-electrical-mechanical coupled-field contact comprised of an elastic hemisphere pressed against an elastic half-space. The goal of this investigation is to develop a fundamental understanding of the behavior of this multiphysics contact, with a particular interest on the contact area through which current flows. The results from the model illustrate a distinct difference in contact behavior between force control and displacement control in the presence of an applied electrical potential/current. It is shown that, while Hertz contact theory can be used to accurately predict the behavior of the contact under force control, a new relationship is established to accurately predict the behavior of the contact under displacement control. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE9000134000004 [...]