Abstract
The analysis of the sliding electrical contact characteristics between the armature and rails is an important research area for electromagnetic railguns. In this paper, a sliding electrical contact model considering non-ideal factors is introduced, the magneto-thermal coupling characteristics of the contact interface are summarized, and the current and temperature distribution characteristics are outlined. In the end, measures that can be taken to improve the contact performance are presented in terms of armature rail material selection and structural optimization.
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