设计了T2LXD1系列电枢,分析了6061-T6铝合金材料的弹塑性特点,利用线性强化理论和接触理论并结合ANSYS软件,建立了T2LXD1系列电枢弹塑性接触模型,研究了电枢尾翼结构对电枢/导轨滑动界面接触状态的影响规律,得到了界面接触力、接触面积和接触压力分布等状态参数的数值模拟结果.利用短导轨电磁驱动系统,进行了T2LXD1系列电枢滑行实验,分析了电枢/导轨界面滑磨状态,比较了滑行性能曲线.实验结果表明:长尾翼电枢并不能带来实际接触面积的增加,电枢的滑行性能随着电枢尾翼长度的增加反而减小；对于柔顺性好的电枢和短导轨来说,适当增加滑动界面的预紧接触力能够提高电枢的滑行性能.%The T2LXD1 series armatures are designed and the elastic-plastic characteristics of 6061-T6 aluminum alloy is analyzed. The linear hardening theory, the contact theory, and the ANSYS software are utilized to build the elastic-plastic contact model of the T2LXD1 series armatures. The effect of tail structure on the contact condition of the armature-rail interface is studied, and the interfacial contact parameters such as contact force, contact area and contact pressure are simulated and obtained. A small electromagnetic drive system with short rail is used to execute the sliding experiments of T2LXD1 series armatures, and the interfacial wearing conditions are analyzed, the sliding performance curves are compared. The experimental results show that the long tail can not increase the effective contact area, and longer tail results in lower sliding performance of armature; for the flexible armature and the short rail, to properly increase the pretightening contact force of the interface can improve the sliding performance of armature.
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