基于红外测温的面接触摩擦温度场研究

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In order to study the distribution of surface contact friction temperature field, nylon and bronze were respec- tively used to constitute the friction pairs with 45 steel, and the friction and wear tests were carried out. The real-time in- terface temperature of the annular friction pair was measured directly by the infrared temperature probe, and the data were imported in ANSYS as a boundary condition to simulate the process of friction heat generation. The transient temperature distribution and the temperature change tendency in contact zone were analyzed, and the calculated results were compared with the experimental results under the conditions. The results show that the relatively high real-time and accuracy are showed by using the infrared temperature probe, the thermal properties of the friction pairs and the friction test conditions are the main factors affecting the temperature distribution.为了探索面接触摩擦温度场的分布，采用尼龙和锡青铜分别与45#钢构成环一块滑动摩擦副进行摩擦磨损实验，用非接触式红外探头直接测出摩擦区域的实时温度，将此作为边界条件导人ANSYS中分析其摩擦生热过程，求解温度瞬态分布和接触区的温度变化趋势，并与实验数据进行比较。结果表明：红外探头测温具有相对较高的实时性和精确性；摩擦试验工况条件及摩擦副材料热物性是影响温度场分布的主要因素。