Ti(C,N)基金属陶瓷干摩擦条件下瞬态温度场的有限元模拟

Finite Element Simulation of Transient Temperature Field of Ti(C,N)-Based Cermet under Dry Friction Condition

利用有限元数值模拟方法对Ti(C,N)基金属陶瓷在摩擦过程中的瞬态温度场进行了分析,探讨了不同摩擦转速、载荷和环境温度等因素对Ti(C,N)基金属陶瓷摩擦表面温度变化的影响.结果显示,Ti(C,N)基金属陶瓷在摩擦过程中其表面最大温升随着转速和载荷的增加而增大,且转速对表面温升的影响大于载荷的作用,而环境温度对金属陶瓷表面温升的影响并不显著;在滑动过程中,Ti(C,N)基金属陶瓷表面最高温度区域主要位于其与对磨小球的接触区;利用摩擦试验机对Ti(C,N)基金属陶瓷表面摩擦温度变化进行了实验测量,结果与有限元分析相一致.

The transient temperature field of Ti(C,N)-based cermet during sliding friction is analyzed by finite element simulation method(FEM).The effects of sliding speed,load and ambient temperature on the friction temperature rise of Ti(C,N)-based cermet are investigated.The results show that the maximum temperature rise on the surface of Ti(C,N)-based cermet increases with the increase of the rotating speed and load during the friction process,and the contribution of rotating speed to surface temperature rise is greater than that of load.The ambient temperature has non-significant influence on the surface temperature rise of Ti(C,N)-based cermet.In the sliding process,the maximum temperature is mainly located at the contact area between Ti(C,N)-based cermet and the grinding ball.The temperature rise on the surface of Ti(C,N)-based cermet is measured by a ball-on-disk wear tester,and the results are consistent with the finite element analysis.