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Transient wear capacity calculation of armature-rail interface in pulse current
Author(s): 
Pages: 225-230
Year: Issue:  11
Journal: High Power Laser and Particle Beams

Keyword:  electromagnetic launcharmaturetransient wear capacitycontact forcefriction coefficient;
Abstract: 基于固体导热原理和多物理场耦合理论,推导出电枢表面瞬态磨损量计算方程,同时提出接触电阻和瞬态接触力的计算方法.在此基础上,总结并提出电枢瞬态磨损量的计算方法,并利用此方法分析了磨损量随着接触长度、宽度的变化规律:枢轨接触面的磨损主要分布在前端边缘以及两侧边缘,沿着接触长度方向,磨损量越来越小,沿着接触宽度方向,磨损量先减小后增大,中间部分磨损较小.电枢表面磨损率计算结果与美国德克萨斯大学高技术研究所的实验结果吻合较好,为建立电枢磨损量与转捩之间的关系奠定理论基础.
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