法向压力对浸金属碳/不锈钢材料载流摩擦耦合温度场的影响

摘要

Temperature field model for aluminum-stainless steel composite conductor rail( stainless steel )/collector shoe ( metal impregnation carbon) under the coupling of contact resistor-friction thermal was established by FE software ANSYS.The temperature field distribution model of the friction pair was simulated and the maximum coupled temperature changing with different normal force was researched. The results show that the maximum coupled temperatures decrease at first and then rise with the increase of normal force with the constant displacement, current and relative sliding speed. For the friction pair of the metal impregnation carbon and stainless steel, there is a optimal normal force which makes the maximum coupled temperature to be the lowest. This normal force can be used as the actual normal force in order to reduce the abrasion as a result of temperature rising.%通过ANSYS有限元软件建立钢铝复合轨(不锈钢)/受电靴(浸金属碳材料)在接触电阻热和摩擦热耦合作用下的温度场模型,模拟摩擦副的载流摩擦磨损温度场分布,研究模型在不同法向压力条件下的耦合温度变化特性.结果表明:对于浸金属碳材料/不锈钢摩擦副,在位移、电流和相对滑动速度一定的条件下,随着法向压力的升高,耦合最高温度呈现出先降低再升高的特性,存在一个使得耦合温度最低的法向压力;为降低摩擦副由于温升而导致的磨损,可选此法向压力作为实际工作压力.