Numerical Simulation on Flameproof Performance of the Explosion-proof Component in the Detonation Wave-based Micro-explosive Train

The Detonation Wave-based Micro-explosive Train is widely used in micro-fuze and initiation systems due to its simple structure, short response time, and high energy transfer efficiency, and has become an important research direction in fuze technology. To address the issue of insufficient flameproof safety in the Detonation Wave-based MEMS Micro-explosive Train, a numerical simulation model is established. The model consists of Cu(N₃)₂ as the initiating explosive, an explosion-proof component, and HNS-IV as the donor explosive. The propagation characteristics of the detonation wave are systematically studied under conditions with and without the explosion-proof component. The attenuation behavior of the detonation wave by nickel and silicon explosion-proof components is analyzed. Results show that under the same thickness condition, the nickel explosion-proof component exhibits stronger detonation wave attenuation capability and higher flameproof reliability compared to the silicon component. Considering both structural dimensions and flameproof safety, the nickel component with a thickness of 0.1 mm is determined as the optimal explosion-proof structure. This study provides a theoretical basis for the safety design and parameter optimization of the Detonation Wave-based MEMS Micro-explosive Train.