Abstract
AbstractIn order to explore the influence law of rail Structural parameters on current distribution, a two-dimensional dynamic finite element model of railgun is established, and the electromagnetic thermal tight coupling rail current and temperature distribution under different rail shapes and corresponding size parameters are analyzed. The results show that reducing the spacing and height of the rectangular rail can improve the current density of inner surface of the rail, and changing the rail width has no effect on the current density distribution. Through the chamfering and the appropriate selection of the inner and outer half axis size of the elliptical rail, the current concentration phenomenon can be suppressed, rail current distribution characteristics can be improved, and the heat distribution of the rail can be optimized, which provides a reference for the size optimization design of the rail. KeywordsRail structureTemperature fieldCurrent distribution
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