周向约束对杆式射流成型规律的仿真研究
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摘要
为了达到战斗部减质量并满足装药特殊接口尺寸的要求,建立了三维有限元模型。利用LS-DYNA软件对杆式射流成型过程进行了三维数值模拟,研究了周向约束对变壁厚球缺罩装药杆式射流成型规律的影响。研究结果表明:周向约束中的装药壳体壁厚及衬套材料、高度均对杆式射流的形态、速度分布有显著影响,其中周向约束材料对射流的影响最大,壳体厚度、衬套高度次之。研究得出结论:在设计战斗部周向约束时,合理匹配壳体壁厚,衬套材料、高度可有效改变射流形态和性能,同时可实现战斗部减质量及匹配装药接口尺寸要求。
In order to reduce the weight of warhead and meet the requirements of the special interface size of charge,the three-dimensional finite element model was built,and the three-dimensional numerical simulation on forming process of rod-type jet was carried out by LS-DYNA software.The influence of circumferential constraint on the jet-forming process of variable-wall-thickness ball-lacking cap charge was studied.The result shows that the shell thickness,bushing material and height significantly influence the shape and velocity distribution of rod jet in the circumferential constraint.The effect of circumferential-constraint material on the jet flow ranks the first,and the effects of shell thickness and bushing height rank the second.It can effectively change the jet shape and performance to reasonablely match.At the same time,the warhead weight can be reduced,and the size of charge interface can be matched.
In order to reduce the weight of warhead and meet the requirements of the special interface size of charge,the three-dimensional finite element model was built,and the three-dimensional numerical simulation on forming process of rod-type jet was carried out by LS-DYNA software.The influence of circumferential constraint on the jet-forming process of variable-wall-thickness ball-lacking cap charge was studied.The result shows that the shell thickness,bushing material and height significantly influence the shape and velocity distribution of rod jet in the circumferential constraint.The effect of circumferential-constraint material on the jet flow ranks the first,and the effects of shell thickness and bushing height rank the second.It can effectively change the jet shape and performance to reasonablely match.At the same time,the warhead weight can be reduced,and the size of charge interface can be matched.
引文
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[2]付建平,冯顺山,陈智刚,等.双层球缺罩形成复合杆式射流的初步研究[J].中北大学学报,2016,37(1):24-28.FU Jian-ping,FENG Shun-shan,CHEN Zhi-gang,et al.The doublelayer hemispherical liner to form a composite rod type jet preliminary study[J].Journal of North University of China,2016,37(1):24-28.(in Chinese)
[3]杨丽,陈闯,张健,等.带隔板装药的杆式射流成型试验及侵彻特性分析[J].兵工学报,2016,37(4):621-626.YANG Li,CHEN Chuang,ZHANG Jian,et al.Take charge of the baffle rod like jet forming test and penetration characteristics analysis[J].Acta Armamentarii,2016,37(4):621-626.(in Chinese)
[4]彭飞,余道强,阳世清,等.装药高度对反应材料药型罩聚能装药威力的影响[C]//第六届含能材料与钝感弹药技术学术研讨会论文集.海口:北京理工大学出版社,2014:452-455.PENG Fei,YU Dao-qiang,YANG Shi-qing,et al.The effect of the height of charge on the reaction material and shaped charge power[C]//Proceedings of the 6th Symposium on Energetic Materials and Insensitive Ammunition Technology.Haikou:Beijing Institute of Technology Press,2014:452-455.(in Chinese)
[5]曹红根.爆炸式反应装甲穿而不爆的研究[D].南京:南京理工大学,2006.CAO Hong-gen.Study on explosive reactive armor wearing[D].Nanjing:Nanjing University of Science and Technology,2006.(in Chinese)
[6]时党勇,李裕春,张胜民.基于ANSYS/LS-DYNA8.1进行显示动力学分析[M].北京:清华大学出版社,2005.SHI Dang-yong,LI Yu-chun,ZHANG Sheng-min.Display dynamic analysis based on ANSYS/LS-DYNA8.1[M].Beijing:Tsinghua University Press,2005.(in Chinese)
[7]宋思维,刘天生,王凤英,等.碳化硅及氧化铝陶瓷反应装甲附带损伤研究[J].科学技术与工程,2016,16(13):151-155.SONG Si-wei,LIU Tian-sheng,WANG Feng-ying,et al.Study on the reactive armor collateral damage of silicon carbide and alumina ceramics[J].Science Technology and Engineering,2016,16(13):151-155.(in Chinese)
[8]陈智刚,赵太勇,侯秀成.聚能装药金属射流形成技术研究[J].爆破器材,2004,33(2):4-7.CHEN Zhi-gang,ZHAO Tai-yong,HOU Xiu-cheng.The jet of shaped charge blasting equipment technology research[J].Explosive Materials,2004,33(2):4-7.(in Chinese)
[9]李德才.小口径聚能装药研究[D].南京:南京理工大学,2010.LI De-cai.Small caliber shaped charge[D].Nanjing:Nanjing University of Science and Technology,2010(in Chinese)
[10]杨宝良,罗健,侯云辉,等.战斗部壳体结构及厚度对EFP成型的影响研究[C]//第十三届全国战斗部与毁伤技术学术交流论文集.黄山:北京理工大学出版社,2013:412-415.YANG Bao-liang,LUO Jian,HOU Yun-hui,et al.Effect of warhead shell structure and thickness on EFP forming[C]//Proceedings of the 13th National Warhead and Damage Technology Academic Exchange Seminar.Huangshan:Beijing Institute of Technology Press,2013:412-415.(in Chinese)