洛伦兹力与温度场作用下枢轨摩擦磨损特性

电枢与轨道间摩擦磨损直接影响着枢轨接触状态，进而影响着电磁轨道发射装置的使用寿命和发射效率. 因此针对焦耳热与摩擦热作用下接触面温度纵向扩散特性，建立温度作用下Archard磨损模型分析温度对枢轨间磨损的影响. 结果表明：枢轨间磨损量主要发生在电枢表面，且最大磨损量集中在电枢尾翼边缘区域. 随着电枢运动过程，枢轨表面温度逐渐升高，接触区域材料的弹性模量和硬度降低，枢轨间磨损量增大. 接触表面磨损量增大也反映出了枢轨接触面温度升高加速了电枢表面的烧蚀.Friction and wear between the armature and rail directly affect the armature-rail contact state, thereby influencing the service life and launch efficiency of electromagnetic railgun launchers. Therefore, aiming at the longitudinal temperature diffusion characteristics of the contact surface under the combined action of Joule heat and frictional heat, an Archard wear model under temperature effects was established to analyze the influence of temperature on armature-rail wear. The results show that the majority of armature-rail wear occurs on the armature surface, with the maximum wear concentrated in the edge region of the armature tail fins. As the armature moves, the temperature of the armature-rail surface gradually rises, the elastic modulus and hardness of the material in the contact area decrease, and the armature-rail wear volume increases. The increase in contact surface wear also reflects that the elevated temperature of the armature-rail contact interface accelerates the ablation of the armature surface.

搜集汇总

背景与挑战

背景概述

该数据集研究电磁轨道发射装置中电枢与轨道间的摩擦磨损特性，重点分析温度场（由焦耳热和摩擦热引起）对磨损的影响。通过建立温度作用下的Archard磨损模型，发现磨损主要集中于电枢表面，尤其是尾翼边缘区域，且温度升高会降低材料性能，从而加剧磨损和烧蚀过程。