Research On The Frictional Temperature Field Of The Face-to-Face Contact Based On The Measurement Of The Interface

In this thesis, a test device is specially designed to enable the temperature on the frictional interface to be measured, which is based on the improvement of the clamping structure, an important part of the multi-functional environment- controllable tribometer (MECT). And the real-time interface temperature of the annular friction pair is measured directly by the infrared temperature probe with some excellent characteristics such as high sensitivity (±1 % or±1℃, take the large value), high response speed (0.1 second), and saved into a computer dynamically. Considering the structural characteristics of the friction pair being cyclosymmetric, an analysis module for the frictional temperature field is developed by the mixed programming method which makes use of the APDL (provided by ANSYS) and Visual Basic 6.0 with friendly interfaces. And the module does the parametric modeling for the frictional temperature field analysis of the face-to-face contact pair, and does the automatic handling with boundary conditions and the intelligent controlling over the solving progress, so that it is convenient to obtain the digital images of the frictional temperature distribution of the friction pair and relevant reports based on the experimental data in order to realize the purposes of on-line measurement and automatic analysis.Furthermore, the annular face-to-face contact friction pairs composed of 45 # steel as the upper-sample and three typical materials (bronze, cast iron, nylon) as the lower-samples were tested under dry sliding or boundary lubrication frictional conditions by using MECT, and the temperature of the friction pairs under the effect of frictional heat was measured and analyzed. and the temperature distribution and its changes of some typical materials were researched systematically under different test conditions; and then the results of the analysis were verified by the observations of the thermal infrared imager, which improves the analytical accuracy of the temperature field of the face-to-face friction pair.