Firing Ignition Performance of Firearms Based on the Co-simulation of LSDYNA and FLUENT

ZHANG Shuxia; CHEN Baiyu; WEI Zhifang; ZHANG Kebin; GUO Xiaobao; YU Yongbo

doi:10.19554/j.cnki.1001-3563.2026.09.004

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (9) : 34-43. DOI: 10.19554/j.cnki.1001-3563.2026.09.004

Special Topic on Ammunition Response and Protection Technology under Intensive Dynamic Loading

Firing Ignition Performance of Firearms Based on the Co-simulation of LSDYNA and FLUENT

ZHANG Shuxia^1,*, CHEN Baiyu², WEI Zhifang¹, ZHANG Kebin¹, GUO Xiaobao¹, YU Yongbo³

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Abstract

The work aims to investigate the effect of key structural parameters on the ignition performance of firearms during firing. A co-simulation approach integrating LSDYNA and FLUENT was employed to numerically simulate the entire process of "firing pin impact—primer ignition—combustion gas flow development". The accuracy of the simulation model was validated through drop hammer impact tests on the firing ignition system. The effects of locking clearance (δ) and primer surface height (H) on the pressure characteristics at observation points inside the cartridge case were systematically analyzed. Results showed that the error between experimental and simulated pressure characteristic parameters under various working conditions was less than 15%. The locking clearance exhibits a positive effect on pressure initiation time and peak arrival time, while the primer surface height shows a negative effect. Variations in locking clearance have no significant impact on the pressure peak value. The proposed coupled simulation method provides an effective analytical tool for the structural design and performance evaluation of firearm ignition systems.

Key words

firing ignition / primer surface height / locking clearance / co-simulation

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ZHANG Shuxia, CHEN Baiyu, WEI Zhifang, ZHANG Kebin, GUO Xiaobao, YU Yongbo. Firing Ignition Performance of Firearms Based on the Co-simulation of LSDYNA and FLUENT[J]. Packaging Engineering. 2026, 47(9): 34-43 https://doi.org/10.19554/j.cnki.1001-3563.2026.09.004

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