A reactive flow model for heavily aluminized cyclotrimethylene-trinitramine
A reactive flow model for heavily aluminized cyclotrimethylene-trinitramine
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DOI：
10.1063/1.4887811
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发表时间：
2014-07
影响因子：
3.2
通讯作者：
Bohoon Kim;Jungsu Park;Kyung-Cheol Lee;J. Yoh
中科院分区：
文献类型：
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作者：
Bohoon Kim;Jungsu Park;Kyung-Cheol Lee;J. Yoh
反应流的准确和可靠的预测是一个具有挑战性的任务时，表征高能材料受到外部冲击的冲击，作为爆炸过渡时间是微秒的顺序。本研究的目的是调查的尺寸效应行为的重铝环三亚甲基-三硝胺（RDX），其中包含35%的铝通过使用爆轰速率模型，包括点火和增长机制的冲击起爆和随后的爆轰。通过一系列无侧限速率棒试验和二维流体动力学模拟，建立了反映爆速与装药反半径关系的尺寸效应曲线。通过压力室试验进一步验证了反应流模型在预测重铝炸药外冲击响应中的有效性。
An accurate and reliable prediction of reactive flow is a challenging task when characterizing an energetic material subjected to an external shock impact as the detonation transition time is on the order of a micro second. The present study aims at investigating the size effect behavior of a heavily aluminized cyclotrimethylene-trinitramine (RDX) which contains 35% of aluminum by using a detonation rate model that includes ignition and growth mechanisms for shock initiation and subsequent detonation. A series of unconfined rate stick tests and two-dimensional hydrodynamic simulations are conducted to construct the size effect curve which represents the relationship between detonation velocity and inverse radius of the charge. A pressure chamber test is conducted to further validate the reactive flow model for predicting the response of a heavily aluminized high explosive subjected to an external impact.