基于电能的桥箔爆炸FIRESET模型修正

Modification of FIRESET Model of Exploding Foil Based on Energy

针对FIRESET电爆炸模型认为爆炸过程中导体动态电阻是比作用量的函数,在应用于分析桥箔电爆炸放电回路与研究爆炸箔电爆炸特性时,存在计算误差大、不能直观反映电爆炸过程的缺点,采用电能取代比作用量,引入初始电阻率修正项,从而对FIRESET桥箔电爆炸的非线性动态电阻模型进行修正;利用修正模型对Al、Cu、Ni/Al多层膜3种爆炸箔的电爆炸曲线进行计算,结果几乎与测试结果完全重合,有效地改进了FIRESET模型的模拟偏差。表明利用电能修正FIRESET模型可以直观地反映电爆炸过程中由于温升和相变导致爆炸箔电阻变化的一般规律,有效地仿真电爆炸过程。

FIRESET model of foil exploding considered dynamic resistance of explosion as a function of specific action, it has the disadvantages of significant error in the circuit analysis of the exploding foil and the investigation of electric explosion characteristics. In this paper, the FIRESET nonlinear dynamic model was modified through replacing specific action with energy and introducing initial resistance. The calculated burst curves by the modified model were in good agreement with the experimental curves for the exploding of Al, Cu and Ni/Al. It is more effective than the FIRESET model, because the modified model based on energy can directly reflect the exploding process associated with resistance change due to phase transition and temperature increasing.