利用三维经典热传导理论对环一面滑动摩擦副温度分布模型进行研究,以紫铜和铸铁为例,在ANSYS中模拟分析其摩擦生热过程,求解温度瞬态分布及接触区温度的变化趋势,并与相同条件下的实验数据进行对比。结果表明:建立的有限元模型能够较好地模拟滑动摩擦生热过程;材料的密度、比热容及导热率对摩擦温度场均存在一定影响,对于密度和比热容相近的紫铜和铸铁2种试样,前者由于导热率高,温度扩散迅速,温度分布梯度明显小于后者。
The temperature distribution model of ring-surface sliding friction pair was studied by the classical heat trans- fer theory. The friction heat generation process of red copper and cast iron was simulated in ANSYS, the calculated transi- ent temperature distribution and the temperature change tendency in contact zone were compared with experimental data under the same conditions. The results show that the finite element model can simulate the heat generation process of slid- ing friction pair;material density, heat capacity ratio and thermal conductivity would influence the friction temperature field simultaneously, to the red copper and cast iron with similar density and heat capacity ratio, the temperature distribution gra- dient of the former is obviously smaller than that of the latter because of higher thermal conductivity.