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Microscopic Analysis of Relationship between Explosive Detonation Performance and Pore Distribution
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Rong-ting CAO, Xiao-hong WANG, Jia-xi LI, Xiao-jie LI, Yu-xin WANG, Hong-hao YAN, Rui GENG
Blasting | 2025, 42(3) : 145 - 152
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Blasting | 2025, 42(3): 145-152
BLASTING MATERIALS
Microscopic Analysis of Relationship between Explosive Detonation Performance and Pore Distribution
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Rong-ting CAO, Xiao-hong WANG, Jia-xi LI, Xiao-jie LI, Yu-xin WANG, Hong-hao YAN, Rui GENG
Affiliations
  • School of Mechanics and Aerospace Engineering, Dalian University of Technology, Dalian 116023, China
Published: 2025-05-15 doi: 10.3963/j.issn.1001-487X.2025.03.016
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This study introduces a straightforward two-dimensional vortex model to examine the release and absorption of vortex energy. The energy transfer resulting from vortex collapse during explosive detonation and the microscopic mechanisms underlying detonation growth are analyzed. The relationship between the macroscopic phenomena of detonation growth and extinction and microscopic factors, such as pore size distribution, is established through experimental validation. Findings suggest that the stability of the detonation process is microscopically governed by thermal flux and the effective number of vortices per unit volume within the field. The effects of particle size and density of the explosives on the macroscopic detonation behavior can be elucidated by considering the effective vortex volume concentration and distribution. Control of the ignition vortex pore size is essential, and stabilization of detonation can be achieved by adjusting pore sizes within defined minimum and maximum limits. An optimal and effective pore volume concentration is necessary to maximize the energy utilization efficiency of the explosives. Based on this research, successful tests on the regulation of detonation velocity of emulsion explosives through the use of mixture sensitizers with varied size distributions and constant densities were conducted.

vortex model  /  pore size  /  density  /  particle size  /  detonation
Rong-ting CAO, Xiao-hong WANG, Jia-xi LI, Xiao-jie LI, Yu-xin WANG, Hong-hao YAN, Rui GENG. Microscopic Analysis of Relationship between Explosive Detonation Performance and Pore Distribution[J]. Blasting, 2025 , 42 (3) : 145 -152 . DOI: 10.3963/j.issn.1001-487X.2025.03.016
  • National Natural Science Foundation of China(12172084)
Year 2025 volume 42 Issue 3
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Article Info
doi: 10.3963/j.issn.1001-487X.2025.03.016
  • Receive Date:2024-12-25
  • Online Date:2026-03-17
  • Published:2025-05-15
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History
  • Received:2024-12-25
Funding
National Natural Science Foundation of China(12172084)
Affiliations
    School of Mechanics and Aerospace Engineering, Dalian University of Technology, Dalian 116023, China

Corresponding:

LI Xiao-jie (1963-), male, Dalian City, Liaoning Province, Ph.D, professor, engaged in research on explosion mechanics and special blasting, (E-mail) .
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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