Thermo-Mechanical Coupling Numerical Analysis Of The Frictional Temperature Field Based On The Infrared Measurement

Friction pair is the most common contact form in modern machinery. Friction heat and the temperature generated from it are important factors affecting the tribological behavior and the materials properties. So the research of the friction temperature field is of great practical significance.In this paper, a special experiment device is designed based on the multi-functional environment-controllable tribometer. The lower surface temperature of the up-sample is measured by the precision infrared probe, while the outside-surface temperature of the up-sample as well as down-sample are measured by the thermal infrared imager in the experiment. In order to establish more accurate friction temperature field, the measured temperature is used as a boundary conditions, considering the real-time friction coefficient and the thermal properties varied with temperature, to construct thermal-structural coupling analysis model in COMSOL, a multi-field coupling FEM software.The final results show that:the presented numerical calculation method with combination of real-time boundary conditions can simulate the transient friction temperature field more accurately; speed, load, friction coefficient and materials of friction pair are the main factor affecting the temperature distribution.