Prediction and Measurement of Surface Temperature Rise at the Contact Interface for Oscillatory Sliding

Abstract

Surface temperature rise due to frictional heating in oscillatory sliding is studied using Green's function method and a recently developed temperature model for finite bodies. The surface temperature solution in oscillatory sliding differs in two respects from that in unidirectional sliding: the heat source is time varying and the sliding motion is periodic. The magnitude of the heat flux determines the local or flash temperature rise, which is cyclic owing to the time-dependent nature of the heat source. The periodic sliding movement of the heat source is found to be responsible for an additional surface temperature increase which can be considered as a nominal temperature rise. Based on a new surface temperature model for a finite contacting body, a relatively simple method for predicting the maximum surface temperature rise for an oscillatory sliding system is presented. Experimental measurements of surface temperature rise during oscillatory sliding were carried out using thin-film thermocouple (TFTC) techniques. The measured surface temperature rise at the contact interface agrees well with the model's predictions.