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为了获得更精确的电脉冲除冰(EIDI)系统中电磁力在飞机蒙皮上的分布及其随时间变化的情况,针对系统的工作原理与工作过程进行了仿真研究。计算分析了EIDI系统电路中电流随时间变化的关系;通过麦克斯韦方程组的求解完成了EIDI系统电磁场的仿真;计算分析了电磁力随时间变化的规律,获得了蒙皮上的磁感应强度分布、涡电流密度分布和瞬态电磁力密度分布。考虑线圈工作时蒙皮对其电感的影响,建立了更接近真实电路的激励加载方法,得到了准确的电磁力变化趋势;考虑趋肤效应对蒙皮厚度方向上涡电流密度、电磁力密度分布的影响,用有限元分析方法使蒙皮上电磁力分布的计算更为全面合理。
In order to obtain a more accurate distribution of electromagnetic force in aircraft skin during EIDI and its variation with time, the working principle and working process of the system are simulated. The relationship between current and time in EIDI system was calculated and analyzed. The electromagnetic field simulation of EIDI system was completed by solving Maxwell’s equations. The law of electromagnetic force with time was calculated and the magnetic flux density distribution on the skin was obtained. Current density distribution and transient electromagnetic force density distribution. Considering the effect of the skin on the inductance when the coil is working, an excitation loading method is established which is closer to the real circuit, and the accurate trend of the electromagnetic force is obtained. Considering the effect of the skin effect on the eddy current density and electromagnetic force density in the thickness direction of the skin, , The calculation of the distribution of electromagnetic force on the skin by the finite element method is more comprehensive and reasonable.