Characteristic Curve Method for Movement of Flyer Driven by TNT and Emulsion Explosives with General Equation of State
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摘要: 在爆炸气体动力学的基础上,利用特征线差分法,对飞板的运动规律进行研究。差分过程中,基于稳定爆轰的基本假设,根据二维定常流理论,推导了通用状态方程的特征线相容关系。利用爆轰气体密度取代特征线相容关系中的马赫数,导出了与物质物态无关的通用状态方程特征线法,编写了爆轰产物作用下飞板内部和边界的差分计算程序。利用该程序计算了飞板在TNT炸药和乳化炸药爆轰作用下的运动参数,研究了在不同质量比下TNT炸药和乳化炸药爆轰驱动飞板的抛掷姿态曲线,并与Richter公式计算结果进行了对比研究。Abstract: On the basis of explosion gas dynamics, the movement of flyer plate is studied using characteristic curve difference method in this paper. In the process of difference, the basic assumption of steady detonation is used to study the law of flyer plate movement. According to the theory of two-dimensional steady flow, the compatibility relationship of characteristic curves is derived which belongs to general equation of state, with Mach number taking the place of the density of detonation gas. The movement parameters of flyer plate accelerated by TNT and emulsion explosives are calculated by the difference programs of characteristic curve. In addition, the flying postures of flyer plates driven by the two kinds of explosives at different mass ratio are also analyzed and compared with the calculated results by Ritchter's formula in terms of its accuracy.
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Key words:
- steady flow /
- general equation of state /
- characteristic curve /
- flying posture
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Guo Y X, Zhao F X, Zhou Z R. An approximate method on describing the movement of plate under sliding detonation: Twin P-M method [J]. Explosion and Shock Waves, 1998, 18(2): 123-124. (in Chinese) 郭佑雄, 赵福兴, 周祖荣. 滑移爆轰作用下飞板运动规律的研究--双P-M法 [J]. 爆炸与冲击, 1998, 18(2): 123-124. Shao B H, Zhang K. Explosive Welding Principle and Its Application [M]. Dalian: Dalian University of Technology Press, 1987. (in Chinese) 邵丙璜, 张凯. 爆炸焊接原理及其工程应用 [M]. 大连: 大连理工大学出版社, 1987. L H S, Zeng X W. Continuous Media Mechanics: Fluid Mechanics and Explosion Mechanics [M]. Changsha: National University of Defense Technology Press, 1999: 134-140. (in Chinese) 吕洪生, 曾新吾. 连续介质力学: 流体力学与爆炸力学 [M]. 长沙: 国防科技大学出版社, 1999: 134-140. Li X J. Flyer plate motion under action of glancing detonation of explosive with a cover and the effects on cutting [D]. Dalian: Dalian University of Technology, 1987. (in Chinese) 李晓杰. 滑移爆轰下带覆盖物的飞板抛掷及对切割的影响 [D]. 大连: 大连理工大学, 1987. Xu X S, Zhang W X. Introduction to Theory of Applied Equations of State [M]. Beijing: Science Press, 1986: 402-403. (in Chinese) 徐锡申, 张万箱. 实用物态方程理论导引 [M]. 北京: 科学出版社, 1986: 402-403. Zhao C F, Li X J, Yan H H, et al. Study on JWL equation of state in explosive welding [A]//Academic Conference of Chinese Society of Mechanics 2009 Abstract Set [C]. Zhengzhou, 2009. (in Chinese) 赵春风, 李晓杰, 闫鸿浩, 等. 爆炸焊接中的JWL状态方程研究 [A]//中国力学学会学术大会2009论文摘要集 [C]. 郑州, 2009. Zhang B P, Zhang Q M, Huang F L. Detonation Physics [M]. Beijing: Weapon Industry Press, 2006: 160. (in Chinese) 张宝坪, 张庆明, 黄风雷. 爆轰物理学 [M]. 北京: 兵器工业出版社, 2006: 160.
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