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为了获得被动电装甲作用于射流的最佳电流波形,研究了电感、电阻、电容及充电电压对被动电装甲放电电流波形的影响规律。在此基础上,重点研究了装甲结构变化对电感的影响及在脉冲电流作用下射流电感、电阻的变化规律。首先在稳态条件下,利用电感经验计算公式计算,得到了影响装甲结构电感的主要因素为装甲板间距与装甲板宽度的比值;接着本文首次考虑脉冲电流通过铜射流时产生的趋肤效应(电流上升)及反趋肤效应(电流下降)对电阻和电感的影响,基于能量原理,利用计算得到的射流上的电流分布,得出了一种等效电阻电感的计算方法,并对直径4 mm的射流进行了计算。结果表明:射流的电阻突然增大后又很快趋于稳态电流作用下的电阻值,而电感突然减低后又很快增大至稳态电流作用下电感的1.8%;最后通过测试实验证实了计算方法的正确性。结论认为:在能量一定的情况下,增大电压比增大电容更有利于提高脉冲电流的梯度和峰值;在装甲板距离一定的情况下,应尽量增加装甲板宽度以减小装甲板结构的电感;趋肤效应有利于减小整个系统的电感,获得更大的电流梯度。
In order to obtain the optimal current waveform of the passive electro-mechanical armor, the influence of inductance, resistance, capacitance and charging voltage on the reactive electric armor discharge current waveform was studied. Based on this, the influence of the change of armor structure on the inductance and the change rule of the jet inductance and resistance under the pulse current are studied emphatically. Firstly, under the steady-state condition, the inductance of the armor structure is calculated by using the inductance empirical formula. The main factor affecting the inductance of the armor structure is the ratio of the armor plate spacing to the armor plate width. Then the paper first considers the skin effect when the pulse current passes through the copper jet Current rise) and anti-skin effect (current decrease) on the resistance and inductance. Based on the energy principle, a method for calculating the equivalent resistance inductance is derived by using the calculated current distribution on the jet. mm jet was calculated. The results show that the resistance of jet increases rapidly and then tends to the value of steady current, and the inductance decreases rapidly and then increases rapidly to 1.8% of the inductance under steady-state current. Finally, it is confirmed by the test that The correctness of the calculation method. The conclusion is that if the energy is constant, increasing the voltage is more conducive to increasing the gradient and the peak value of the pulse current than increasing the capacitance. When the distance between armor plates is constant, the armor plate width should be increased to reduce the armor plate structure Inductance; Skin effect helps to reduce the overall system inductance, to obtain greater current gradient.