全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

均匀炸药冲击起爆和起爆后的行为

DOI: 10.11858/gywlxb.2005.03.010, PP. 247-256

Keywords: 炸药,爆轰,起爆,物态方程

Full-Text   Cite this paper   Add to My Lib

Abstract:

介绍并分析了Campbell等人研究均匀炸药冲击起爆和起爆后行为所获得的实验结果,但不涉及其冲击起爆条件。Campbell等人的实验表明,足够强的冲击波进入硝基甲烷后,经过若干微秒的感应时间,爆轰发生在隔板与炸药间的界面处。这就是说,在均匀炸药中,足够强的冲击虽非瞬时但直接(指不经过其它过程,如爆燃)引发了爆轰。重新处理后的实验数据表明:硝基甲烷起爆后,爆轰波的净爆速小于正常爆速;当进入硝基甲烷的初始冲击波的有效压力peff由8.82GPa升至12.14GPa时,感应时间tind的实验值由3.06μs降至0.705μs。以两相的排平(A,m)物态方程描述爆轰产物,较为严格地重新推导了基于热起爆理论的估算感应时间tind的公式。在上述peff的变化范围内,tind的理论值则由248μs降至0.99μs,明显地高于实验值。这表明,热起爆理论不适于描述硝基甲烷的冲击起爆行为。从本质上讲,热起爆理论对均匀炸药的冲击起爆行为的描述,不符合物质运动的微观图像,因此,它不适于描述均匀炸药的上述行为。

References

[1]  Chinese Encyclopedia ?Chemistry Industry [M]. Beijing: Chinese Encyclopedia Press, 1987. 91; 174. (in Chinese)
[2]  中国大百科全书?化工 [M]. 北京: 中国大百科全书出版社, 1987. 91; 174.
[3]  Zeldovich Ya B, Kompaneets A S. The Theory on Detonation [M]. Translated by Xu H F. Beijing: Higher Education Press, 1958. 171; 183. (in Chinese)
[4]  泽尔道维奇 Ya B, 康巴涅耶茨 A S. 爆震原理 [M]. 徐华舫译. 北京: 高等教育出版社, 1958. 171; 183.
[5]  Karo A M, Mehlman M H, Hardy J R. The Dynamics of Shock-Induced Energy Flux in Molecular Bonds [A]. 8th Symposium on Detonation [C]. 1985. 864-869.
[6]  Trevino S F, Tai D H. Simulation of the Initiation of Detonation in an Energetic Molecular Crystal [A]. 8th Symposium on Detonation [C]. 1985. 870-880.
[7]  Cui J P, He Y Z. Proceedings of Chinese 4th Symposium on Detonation (Vol 2) [C]. Shanhaiguan, Hebei, China, 1994. 1-2. (in Chinese)
[8]  崔季平, 何宇中. 晶格能量弛豫与激波作用下凝聚态分子的稳定性 [A]. 第四届全国爆轰学术会议论文集(下) [C]. 山海关, 1994. 1-2.
[9]  Campbell A W, Davis W C, Travis J R. Shock Initiation of Detonation in Liquid Explosives [J]. Phys Fluids, 1961, 4(4): 498-510.
[10]  Hubbard H W, Johnson M H. Initiation of Detonations [J]. J Appl Phys, 1959, 30: 765.
[11]  Campbell A W, Davis W C, Ramsay J B, et al. Shock Initiation of Solid Explosives [J]. Phys Fluids, 1961, 4(4): 511-521.
[12]  Zhang G R, Chen D N. Dynamics of Initiation of Condensed Explosives [M]. Beijing: Press of the National Defence Industry, 1991. (in Chinese)
[13]  章冠人, 陈大年. 凝聚炸药起爆动力学 [M]. 北京: 国防工业出版社, 1991.
[14]  Kroh M, Thoma K, Arnold W, et al. Shock Sensitivity and Performance of Several High Explosives [A]. 8th Symp on Detonation [C]. 1985. 1131-1138.
[15]  Li Y C. Equation of State of Detonation Product ( Ⅱ)—Does ZND Theory of Detonation Fail? (B) [J]. Chinese Journal of High Pressure Physics, 2000, 14(1): 6-15. (in Chinese)
[16]  李银成. 爆轰产物物态方程(Ⅱ)——爆轰的ZND理论不成立吗?(下) [J]. 高压物理学报, 2000, 14(1): 6-15.
[17]  Li Y C. The Test of Detonation ZND Theory with Experimental data of TNT [J]. Chinese J Chem Phys, 2002, 15(6): 438-442. (in Chinese)
[18]  李银成. 用TNT的{D, ρ0}实验数据对爆轰的ZND理论的检验 [J]. 化学物理学报, 2002, 15(6): 438-442.
[19]  Marsh S P. LASL Shock Hugoniot Data [Z]. Berkeley, California: University of California Press, 1980. 599.
[20]  Li Y C. Behaviors of Shock Initiation and after Initiation for Heterogeneous Explosives [J]. Chinese Journal of High Pressure Physics, to be published. (in Chinese).
[21]  李银成. 非均匀炸药冲击起爆与起爆后的行为 [J]. 高压物理学报, 待发表.
[22]  Walsh J M, Christian R H. Equation of State of Metals from Shock Wave Measurements [J]. Phys Rev, 1955, 97: 1544.
[23]  Li Y C. Equation of State of Detonation Product (Ⅰ)—Detonation Heat, Isentropic Equation and Equation of State of Detonation Product [J]. Chinese Journal of High Pressure Physics, 1998, 12(4): 271-281. (in Chinese)
[24]  李银成. 爆轰产物物态方程(Ⅰ)——爆热、爆轰产物的等熵方程和物态方程 [J]. 高压物理学报, 1998, 12(4): 271-281.
[25]  Li Y C. Expressions of Cold Specific Energy and Cold Pressure for Detonation Products [J]. Chinese Journal of High Pressure Physics, 2005, 19(1): 71-79. (in Chinese)
[26]  李银成. 爆轰产物的冷比内能与冷压的函数表达式 [J]. 高压物理学报, 2005, 19(1): 71-79.
[27]  Xu S G. The Data for Powder Research [Z]. Beijing: Press of the National Defence Industry, 1976. 91-114. (in Chinese)
[28]  徐叔刚.火药研究的有关数据 [Z]. 北京: 国防工业出版社, 1976. 91-114.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133