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An Elastic/Viscoplastic Pore Collapse Model of Double-Layered Hollow Sphere for Hot-Spot Ignition in Shocked Explosives
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Li-Jing WEN1, Zhuo-Ping DUAN1, Zhen-Yu ZHANG2, Zhuo-Cheng OU1, Feng-Lei HUANG1
Chinese Journal of High Pressure Physics | 2011, 25(6) : 493 - 500
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Chinese Journal of High Pressure Physics | 2011, 25(6): 493-500
An Elastic/Viscoplastic Pore Collapse Model of Double-Layered Hollow Sphere for Hot-Spot Ignition in Shocked Explosives
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Li-Jing WEN1, Zhuo-Ping DUAN1, Zhen-Yu ZHANG2, Zhuo-Cheng OU1, Feng-Lei HUANG1
Affiliations
  • 1.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
  • 2.Institute of Technical Physics, College of Science, National University of Defense Technology, Changsha 410073, China
Published: 2011-12-15
Outline
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An elastic/viscoplastic pore collapse model of double-layered hollow sphere, in which the effect of the binder in Plastic Bonded Explosives (PBX) was taken into account, was developed as a hot-spot ignition model in shocked explosives. The space and time distributions of the velocity, strain, temperature and chemical reaction rate in shock compression of the explosive hollow sphere were theoretically calculated. A new expression of reaction rate equation was obtained for the hot-spot ignition. The three-term reaction rate model, consisting of the new hot-spot ignition term, the slow burning term at low-pressure from Kim and the high-pressure reaction term from ZHANG Zhen-Yu, was implemented into the two-dimensional, hydrodynamic finite-element code DYNA2D and used to simulate the one-dimensional shock initiation process of PBX-9501 explosive. The numerical results show that the model can successfully explain the influence of strength and content of the binder in PBX on the shock initiation, and that of particle size and porosity as well.

shock initiation  /  reaction rate model  /  hot-spot ignition model  /  plastic bonded explosives  /  binder
温丽晶, 段卓平, 张震宇, 欧卓成, 黄风雷. 弹粘塑性双球壳塌缩热点反应模型. 高压物理学报, 2011 , 25 (6) : 493 -500 .
Li-Jing WEN, Zhuo-Ping DUAN, Zhen-Yu ZHANG, Zhuo-Cheng OU, Feng-Lei HUANG. An Elastic/Viscoplastic Pore Collapse Model of Double-Layered Hollow Sphere for Hot-Spot Ignition in Shocked Explosives[J]. Chinese Journal of High Pressure Physics, 2011 , 25 (6) : 493 -500 .
Appendix
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Year 2011 volume 25 Issue 6
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Article Info
  • Receive Date：2010-10-10
  • Online Date：2026-11-02
  • Published：2011-12-15
Article Data
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History
  • Received：2010-10-10
  • Revised：2011-03-28
Funding
Affiliations
    1.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
    2.Institute of Technical Physics, College of Science, National University of Defense Technology, Changsha 410073, China
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Citations
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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