CONTACT TEMPERATURE IN A FRETTING CONTACT

A. TUDOR¹

tudor@meca.omtr.pub.ro

 M. M. KHONSARI²

Khonsari@me.lsu.edu

¹ Department of Machine Elements and Tribology, "Politehnica" University of Bucharest, Romania

² Department of Mechanical Engineering, Louisiana State University, USA

Abstract. Friction mechanisms in fretting contacts are the main cause of surface temperature. The determination of sliding velocity is of primary importance in predicting the thermal conditions in a contact. The tangential displacement for a ball on flat contact was expressed by assuming Mindlin hypotheses. This paper argues that plastic deformation in the contact zone may contribute to relative displacement and to thermal heat flux. The temperatures in the fretting contact can be obtained by integrating the fundamental solution of conduction. The integral function is solved in dimensionless form for various parameters of fretting phenomena (friction coefficient, normal load, and frequency).

Keywords: fretting, partial slip, heat flux, friction temperature