火炸药学报2017，Vol.40Issue(1)：59-64,6.DOI:10.14077/j.issn.1007-7812.2017.01.012
破片冲击起爆屏蔽B炸药比动能阈值研究
Study on the Specific Kinetic Energy Threshold of Fragments Impacting Initiation on Covered Composition B
刘鹏飞 1智小琦 1杨宝良 2李娟娟3
作者信息
- 1. 中北大学地下目标毁伤技术实验室,山西 太原 030051
- 2. 西安现代控制技术研究所,陕西 西安 710065
- 3. 晋西工业集团,山西 太原 030027
- 折叠
摘要
Abstract
To study the specific kinetic energy threshold of fragments impacting initiation on covered composition B, the covered composition B with 40Cr shell was impacted by hexagonal prism and cylinder tungsten alloy fragments and the threshold of velocity of covered composition B were measured.The range of specific kinetic energy threshold of fragments impacting initiation on covered composition B was obtained by the calculation method of specific kinetic energy.Using Autodyn-3D software and Lee-Tarver′s ignition and growth model, the specific kinetic energy threshold of two kinds of fragments was calculated under the two states of vertical penetration and maximum windward area and the change rule of specific kinetic energy threshold of fragments impacting initiation on covered composition B under the state of maximum windward area was mainly studied.The results show that the specific kinetic energy threshold of hexagonal prism fragment is lower than that of cylinder fragment, and with increasing the length-to-diameter ratio, the specific kinetic energy threshold of fragments first increases and then decreases.关键词
破片冲击/屏蔽B炸药/冲击起爆/数值模拟/比动能Key words
fragment impacting/covered composition B/impact initiation/numerical simulation/specific kinetic energy分类
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刘鹏飞,智小琦,杨宝良,李娟娟..破片冲击起爆屏蔽B炸药比动能阈值研究[J].火炸药学报,2017,40(1):59-64,6.
