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A prediction model for crater damage effect of steel fiber reinforced concrete target under contact explosion of cylinder charge
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Shigang YANG1, Bingang WANG1, Jiheng XU1, Qin FANG1, Ya YANG2, Ze LUO3
Explosion and Shock Waves | 2026, 46(9) : 095201-1 - 095201-13
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Explosion and Shock Waves | 2026, 46(9): 095201-1-095201-13
• Applied Explosion Mechanics •
A prediction model for crater damage effect of steel fiber reinforced concrete target under contact explosion of cylinder charge
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Shigang YANG1, Bingang WANG1, Jiheng XU1, Qin FANG1, Ya YANG2, Ze LUO3
Affiliations
  • 1State Key Laboratory of Explosion & Impact and Disaster Prevention & Mitigation, Army Engineering University of PLA, Nanjing 210094, Jiangsu, China
  • 2Unit of 63983 of the People’s Liberation Army of China, Wuxi 214000, Jiangsu, China
  • 3Unit of 32573 of the People’s Liberation Army of China, Dongguan 523000, Guangdong, China
Published: 2026-09-05 doi: 10.11883/bzycj-2025-0263
Outline
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To evaluate the crater damage effect of cylinder charge contact explosion on steel fiber reinforced concrete (SFRC) structures, a numerical model of an SFRC target was developed by the using the smooth particle Galerkin method and a structured arbitrary Lagrange-Euler (SPG-S-ALE) fluid-structure interaction algorithm. The failure modes and damage of the SFRC target under different charge mass Q and length-to-diameter ratios l/d were investigated. Based on contact explosion theory and dimensional analysis, cratering coefficients K1 and K2 were introduced to develop predictive models for the crater diameter D and depth H as functions of the effective charge mass Qe. The results indicate that under the combined effects of charge mass and length-to-to-diameter ratio, the primary failure mode of the SFRC targets is cratering damage. Under constant charge mass conditions, as the l/d ratio increases from 1 to 5, both the crater diameter D and depth H decrease by approximately 50%. Within the range of effective charge Qₑ less than 16 kg, the K1 and$ {\sqrt{{K}_{2}}} $ exhibit a power-law decay with increasing effective charge mass, while the crater diameter D and depth H show a power-law growth. For a given effective charge mass Qₑ, the cratering effect is more concentrated on the expansion of the crater diameter. The developed predictive model allows for rapid and reasonably accurate calculation of crater dimensions in SFRC with different strength grades and effective charge mass, providing a theoretical basis for the blast-resistant design of SFRC structures.

steel fiber reinforced concrete  /  cylinder charge  /  contact explosion  /  crater depth  /  crater diameter
杨石刚, 王彬刚, 许继恒, 方秦, 杨亚, 罗泽. 柱形装药接触爆炸作用下钢纤维混凝土靶成坑效应预测模型. 爆炸与冲击, 2026 , 46 (9) : 095201-1 -095201-13 . DOI: 10.11883/bzycj-2025-0263
Shigang YANG, Bingang WANG, Jiheng XU, Qin FANG, Ya YANG, Ze LUO. A prediction model for crater damage effect of steel fiber reinforced concrete target under contact explosion of cylinder charge[J]. Explosion and Shock Waves, 2026 , 46 (9) : 095201-1 -095201-13 . DOI: 10.11883/bzycj-2025-0263
Appendix
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Year 2026 volume 46 Issue 9
158
76
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Article Info
doi: 10.11883/bzycj-2025-0263
  • Receive Date：2025-08-25
  • Online Date：2026-10-10
  • Published：2026-09-05
Article Data
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History
  • Received：2025-08-25
  • Revised：2026-01-22
Affiliations
    1State Key Laboratory of Explosion & Impact and Disaster Prevention & Mitigation, Army Engineering University of PLA, Nanjing 210094, Jiangsu, China
    2Unit of 63983 of the People’s Liberation Army of China, Wuxi 214000, Jiangsu, China
    3Unit of 32573 of the People’s Liberation Army of China, Dongguan 523000, Guangdong, China
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https://castjournals.cast.org.cn/joweb/bzycj/EN/10.11883/bzycj-2025-0263
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