电爆炸过程中金属丝电阻变化规律的仿真分析

探讨了电爆炸过程中金属丝相关参数的变化规律,建立了金属丝电阻在气化前的PSpice模型,得到了电容器初始电压由10 kV到20 kV、回路电感由3.9μH到10.8μH、金属丝直径由0.3 mm到1 mm变化时,金属丝电阻变化的仿真结果。对仿真结果分析表明：初始参数影响金属丝上的能量沉积,决定着金属丝的电阻变化过程以及金属丝完全气化所需要的时间。

Simulation of Wire Resistance in Variation Explosion

Wire resistance is an important parameter in exploding process,it directly reflects the mechanism of the wire exploding process.To understand the mechanism of the wire exploding process,a PSpice model of the wire resistance variation before vaporization is established,based on the understanding of the variation of certain parameters.The model is conducted under different initial parameters,when initial capacitor voltage varies from 10 kV to 20 kV,circuit inductance varies from 3.9 μH to 10.8 μH,wire diameter varies from 0.3 mm to 1 mm.The results of the simulation indicate that the initial parameters affect the deposition of the energy into the wire,and determine the wire resistance variation process,and the vaporization time of the wire.The variation of the wire resistance during wire exploding process shows the initial parameters affecting on the wire status.