中文摘要：

为探究各种因素对绝缘支撑结构性能的影响,基于COMSOL Multiphysics有限元分析软件,通过建立发射装置二维瞬态模型,以麦克斯韦方程、热传导方程、动力学方程作为依据,主要分析绝缘支撑结构的温度和应力分布情况。结果表明,在电磁发射过程中,轨道引起的绝缘支撑结构温升约10K;局部应力最高值远小于绝缘材料的抗张强度。因此,总体上看,轨道对绝缘支撑结构的影响很小。

英文摘要：

To explore different influence factors which caused insulation performance degradation, we established a two dimensional transient electromagnetic launcher model on the basis of finite element software COMSOL Mul- tiphysics. According to Maxwell equations, thermal diffusion equation and transient dynamics equations, we obtain temperature distribution and stress distribution within the insulators. From the overall results, the temperature-rise generated by rails within the insulators is small. And local stress maximum is much less than the tensile strength of insulation materials. In general, rails have the least influence on insulators breakdown in electromagnetic launcher system. This work will provide a basis for further research on insulators performance in the process of electromag- netic launch.