基于热传导原理电枢平均磨损率计算

在假设导轨为半无限长固体导体及电枢表面磨损主要是熔化磨损条件下，基于固体接触面导热原理，推导出电枢和导轨温度分布方程，提出了电枢平均磨损率计算方法。利用此方法分析了驱动电流、电枢和导轨材料匹配和接触面积参数对电枢平均磨损率影响。将平均磨损率计算结果与Stefani和Parker的实验结果进行对比，二者吻合较好，从而为建立电磁轨道炮磨损率与转捩之间的关系提供理论支持。

Calculation of average wear rate in armatures based on heat conduction principle

Under the assumption that the guide rail is a semi-infinite solid conductor and main armature surface wear is the wear based on melting, and according to the solid contact heat conduction principle, the armature and the rail temperature distribution equations are deduced, and the calculation method of average wear rate in armatures is put forward. The influences of average wear rate on driving current, the matching of armature and guide materials and the contact area of the armature are studied. The average wear rate calculation results agree well with Stefani and Parkers experimental results, which verifies the validity of the method.