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Mesoscale Simulation of Cavity Collapse Hot Spot Mechanism in HMX under Shock Loading
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Hua FU, Feng ZHAO, Duo-Wang TAN, Wen-Qiang WANG, Hai-Lin SHANG
Chinese Journal of High Pressure Physics | 2011, 25(1) : 8 - 14
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Chinese Journal of High Pressure Physics | 2011, 25(1): 8-14
Mesoscale Simulation of Cavity Collapse Hot Spot Mechanism in HMX under Shock Loading
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Hua FU, Feng ZHAO, Duo-Wang TAN, Wen-Qiang WANG, Hai-Lin SHANG
Affiliations
  • National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China
Published: 2011-02-15
Outline
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The origin, ignition, growth of hot spot are the factors to understand shock initiation in heterogeneous explosive. The process of cavity collapse in HMX under shock loading was simulated using discrete element method. The results showed that the visco-plastic deformation formed hot spot mechanism and there was serious shear distortion around cavity under low impact. It was also found that the micro-jetting formed hot spot under high impact. The mesoscale process of hot spot formation and cavity collapse were gained.

discrete element method  /  hot spot  /  cavity collapse  /  mesoscale simulation
傅华, 赵峰, 谭多望, 王文强, 尚海林. 冲击作用下HMX晶体孔洞塌缩热点生成机制的细观数值模拟. 高压物理学报, 2011 , 25 (1) : 8 -14 .
Hua FU, Feng ZHAO, Duo-Wang TAN, Wen-Qiang WANG, Hai-Lin SHANG. Mesoscale Simulation of Cavity Collapse Hot Spot Mechanism in HMX under Shock Loading[J]. Chinese Journal of High Pressure Physics, 2011 , 25 (1) : 8 -14 .
Year 2011 volume 25 Issue 1
15
2
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Article Info
  • Receive Date:2009-05-16
  • Online Date:2026-11-02
  • Published:2011-02-15
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History
  • Received:2009-05-16
  • Revised:2009-12-30
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    National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China
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表12种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
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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