Investigating the explosion process of nine-point exploding foil bridge

Jiao Li,Jianhua Chen,Jiangxu Wang,Enyi Chu,Junxia Cheng,Shenjiang Wu,Xinmei Wang,Jia Wang,Qingjie Jiao

doi:10.1063/5.0025493

Abstract

The exploding foil initiator has been developed to satisfy the requirements of modern high-performance artillery and aerospace technologies with respect to speed, consistency, and safety. This study examines the explosive process of the nine-point exploding foil bridge through simulations and experiments. The factors affecting the detonation-related performance, such as the firing circuit, detonation mode, bridge foil shapes, and output charge are analyzed and discussed. The results could provide theoretical guidance and numerical support for practical application and testing.

Highlights

With the development of intelligent ammunition and multimode warheads, multi-point detonation technology has assumed an important position and has a wide range of prospects for application to modern detonation systems
In 2008, Falter summarized the relationship between the detonation method and the damage mode of a shaped charge warhead
The key for a multi-mode warhead to be capable of multiple damage modes is controlling the initiation method

Summary

INTRODUCTION

With the development of intelligent ammunition and multimode warheads, multi-point detonation technology has assumed an important position and has a wide range of prospects for application to modern detonation systems. The key for a multi-mode warhead to be capable of multiple damage modes is controlling the initiation method.. The traditional multi-point detonation control technology is implemented by using multiple electric detonators to detonate the explosive logic network. It requires safety devices in the sequence of detonation transmission. The exploding foil initiator provides a new method of multi-point detonation control. It transmits signals through the circuit without requiring complicated safety components and has the advantages of safety, reliability, small size, and promptness, which make it especially suitable for multi-point initiation control when applied to a warhead.

STRUCTURAL DESIGN AND CIRCUIT PARAMETERS

Influence of the circuit on the detonation performance

Influence of the detonation mode

Effect of shape

Influence of the output charge