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缓冲材料对活性破片战斗部爆炸驱动影响分析
引用本文:余庆波,王海福,金学科,俞为民. 缓冲材料对活性破片战斗部爆炸驱动影响分析[J]. 北京理工大学学报, 2013, 33(2): 121-126
作者姓名:余庆波  王海福  金学科  俞为民
作者单位:北京理工大学爆炸科学与技术国家重点实验室,北京,100081;北京理工大学爆炸科学与技术国家重点实验室,北京,100081;北京理工大学爆炸科学与技术国家重点实验室,北京,100081;北京理工大学爆炸科学与技术国家重点实验室,北京,100081
基金项目:国家自然科学基金资助项目(青年基金,11202030)
摘    要:为研究活性破片战斗部爆炸驱动作用行为,采用数值模拟与试验相结合的方法,获得了缓冲层材料及厚度对活性破片战斗部爆炸驱动行为的影响特性.数值模拟结果表明,随着缓冲层厚度的增加,活性破片飞散速度明显降低,4种缓冲材料中,软铝缓冲层对活性破片初速影响最大,且破片初速随缓冲层厚度的增加基本呈线性下降趋势,尼龙和凯夫拉缓冲层对破片初速影响较小;随着缓冲层厚度的增加,活性破片所受载荷明显降低,其中软铝降载荷效果最好,其次为凯夫拉.综合考虑活性破片速度和破片完整性、安定性要求,选择凯夫拉缓冲层较好.最后,通过活性破片战斗部地面静爆试验对数值模拟结果有效性进行了验证,试验结果表明,数值模拟结果与试验结果吻合较好. 

关 键 词:活性破片战斗部  缓冲材料  爆炸驱动
收稿时间:2012-04-22

Influence of Buffer Material on Explosive Driven of Reactive Fragment Warhead
YU Qing-bo,WANG Hai-fu,JIN Xue-ke and YU Wei-min. Influence of Buffer Material on Explosive Driven of Reactive Fragment Warhead[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2013, 33(2): 121-126
Authors:YU Qing-bo  WANG Hai-fu  JIN Xue-ke  YU Wei-min
Affiliation:State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
Abstract:The influence of buffer material and layer thickness on explosive driven behaviors of reactive fragment warhead has been researched using combined approach of numerical simulation and experiments. The numerical results demonstrate that the value of initial velocity decreases significantly with the increase of the thickness of buffer layer. For the same thickness, the buffer layer made from annealed aluminum has the greatest effect on the initial velocity decrease of reactive fragment being close to a linear decrease trend, while the buffer with nylon and Kevlar material gives a smaller effect. The magnitude of load of reactive fragment subject to detonation waves decrease evidently with the increase of the thickness of buffer layer. For the same thickness, the buffer layer made from annealed aluminum has the best effect and the buffer with Kevlar material shows a secondary best effect. Considering comprehensively the initial velocity and the integrity of reactive, it is suggested that the buffer layer made from Kevlar material be optimal. The explosion experiments of reactive fragment warhead were conducted and the test results agreed well with the results of numerical simulation showing the validity of the numerical approach.
Keywords:reactive fragment warhead  buffer material  explosive driven
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