内衬结构对活性破片高速驱动影响规律研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (4) : 230-238.

论文

内衬结构对活性破片高速驱动影响规律研究

焦晓龙1，王媛婧1，吴宗娅2，徐豫新3

作者信息 +

Study on influence rule of a lining structure on high speed driving of reactive fragment

JIAO Xiaolong1, WANG Yuanjing1, WU Zongya2, XU Yuxin3

Author information +

文章历史 +

摘要

为实现活性破片在高速驱动下的完整性，研究内衬结构对活性破片高速驱动的影响规律。根据能量守恒定律建立了考虑内衬伸长率的破片初速计算模型，选择2A12铝、20号钢与20号钢/芳纶复合结构三种内衬，基于物态方程分析了内衬与破片接触面上的界面压强，设计了2A12铝和20号钢/芳纶复合结构内衬战斗部方案，通过静爆试验对活性破片破碎情况及计算模型进行了验证。结果显示：20号钢伸长率较2A12铝提高了145.83%，20号钢/芳纶复合内衬战斗部较2A12铝内衬战斗部装填比降低了14%，破片初速提升了10.85%；所建立模型的计算结果与试验吻合较好，计算精度较现有模型提高了8%以上。基于试验结果和理论分析，表明20号钢/芳纶复合内衬实现了对活性破片2300m/s以上速度的爆炸完整驱动。

Abstract

To achieve high velocity and high integrity of the reactive fragment during explosive driving, the influence rule of lining structure on high-speed driving of reactive fragment was studied. Based on the law of conservation of energy, a new model of initial speed of preformed fragment was established by theoretical derivation, which considered the elongation of lining material. Three linings of 2A12 aluminum, 20 steel and 20 steel/aramid composite structure were selected. Based on the equation of state, the interfacial pressure on the contact surface between the lining and the fragment was analyzed. The breakage of reactive fragments and the new model were verified by the static explosion test. Results show that the elongation of 20 steel is 145.83% higher than that of 2A12 aluminum, the loading ratio of warhead with 20 steel/aramid composite lining is 14% lower than that of 2A12 aluminum lining, and the initial fragment velocity is 10.85% higher. The new model is well consistent with the experiment results, and its calculation accuracy is more than 8% higher than the existing model. Based on experimental results and theoretical analysis, it is shown that the reactive fragments remains integrity at a driving speed of more than 2300m/s by using 20 steel/aramid composite lining.

导出引用

焦晓龙1，王媛婧1，吴宗娅2，徐豫新3. 内衬结构对活性破片高速驱动影响规律研究[J]. 振动与冲击, 2024, 43(4): 230-238

JIAO Xiaolong1, WANG Yuanjing1, WU Zongya2, XU Yuxin3. Study on influence rule of a lining structure on high speed driving of reactive fragment[J]. Journal of Vibration and Shock, 2024, 43(4): 230-238

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