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感应线圈炮性能的场路结合分析

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Keywords: 线圈炮,电流丝模型,组合网格法,有限元法,运动导体涡流场

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Abstract:

线圈炮性能分析对于线圈炮的实验研究和电磁结构优化非常重要。本文使用电流丝模型对线圈炮进行路仿真,电流丝模型将线圈炮控制方程归结为非线性变系数常微分方程组的初值问题,路模型易于编程实现,从中可发现系统性能对可变参数的依赖关系。使用组合网格法建立线圈炮场模型,组合网格法使用两套相互独立的网格对场域进行离散,克服了常规有限元法在处理运动电磁问题上需要重剖分的麻烦。文中使用路模型和场模型相结合的方法对三级同轴感应线圈炮进行了仿真,实现了对线圈炮这类复杂的运动导体涡流场的三维场分析,获得了线圈炮发射过程中空间磁场分布和电枢涡流分布。通过对比两种模型的仿真结果,证实了它们的一致性和有效性。

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