飞片式引信微爆炸序列传爆 / 隔爆性能仿真

The size of micro-charge (copper azide) and the thickness of metal flyer are the key factors affecting the reliability of fuze micro-explosive train. A detonation transfer / explosion-proof energy transfer / suppression model of metal flyer micro-explosive train driven by micro-charge is constructed, and a design method for micro-explosive train with size boundaries, such as micro-charge size and metal flyer thickness, is proposed. The research results indicate that the speed of metal flyer(2 200 m / s) increases slowly when the diameter of micro-charge is greater than 0. 8 mm. When the height of micro-charge is greater than 0. 5 mm, the metal flyer moves at a stable speed, which can reliably detonate the next charge. When the size of micro-charge is constant, the speed of metal flyer decreases with the increase of its thickness. The thickness of the flyer increases from 25 μm to 50 μm, which can realize the reliable detonation of micro-explosive train. Through the simulation analysis of explosion-proof slider thickness of MEMS fuze security mechanism, it is verified that the 0. 2 mm-thick nickel-based slider can stably realize the explosion interruption, and the detonation transfer / explosion interruption design boundaries of flyer-type fuze micro-explosive train are finally formed.