基于SPH方法模拟30 mm线膛炮波纹罩压垮过程的力学参数研究
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摘要
为研究高旋转对30 mm聚能装药破甲作用的影响机理及自旋补偿原理,采用LS-DYNA有限元软件中的SPH方法模拟30 mm线膛炮波纹罩的压垮过程,得到粒子的实际运动可分解成向心运动与绕中心圆周切线运动,提出压垮过程的4个阶段:压垮前期、缓冲期、波纹槽区域粒子速度增大期和中心粒子相互作用期。射流形成层沿逆时针方向旋转,而形成杵体的材料以相反方向旋转。结果表明:波纹罩特殊设计可以补偿旋转扰动对30 mm聚能装药侵彻作用的负面影响。
In order to study the effect of high rotation on the shell-penetration of 30 mm shaped charge and the mechanism of spin-compensation,we simulated the overwhelm process of the fluted liner for the 30 mm rifle gun using the SPH method of LS-DYNA finite element software,and found that the actual movement of particles can be decomposed into centripetal motion and tangential motion around the center circle. We then put forward the four stages of the overwhelm process,those of the early crush,the buffer,the particle velocity increase in the fluted liner area and the central particle interaction. The jet forming layer rotates in a counterclockwise direction,whereas the material forming the pestle body rotates in the opposite direction. The results show that the special design of the fluted liner can compensate the negative impact of the rotating disturbance on the penetration effect of the 30 mm shaped charge. The compensating rotating speed of the projectile is 379 r/s and larger.
In order to study the effect of high rotation on the shell-penetration of 30 mm shaped charge and the mechanism of spin-compensation,we simulated the overwhelm process of the fluted liner for the 30 mm rifle gun using the SPH method of LS-DYNA finite element software,and found that the actual movement of particles can be decomposed into centripetal motion and tangential motion around the center circle. We then put forward the four stages of the overwhelm process,those of the early crush,the buffer,the particle velocity increase in the fluted liner area and the central particle interaction. The jet forming layer rotates in a counterclockwise direction,whereas the material forming the pestle body rotates in the opposite direction. The results show that the special design of the fluted liner can compensate the negative impact of the rotating disturbance on the penetration effect of the 30 mm shaped charge. The compensating rotating speed of the projectile is 379 r/s and larger.
引文
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[16]ДУБОВСКОЙМА.Особенностиформированияструивовращающихсякумулятивныхзарядахиоценкавозможностиповышениябронебойногодействиякумулятивныхбоеприпасов:Научно-исследовательскийинститут,пообороннойтехникеСоветаМинистровСССР[R].1964.
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[18]COX C M.Warhead mechanisms study[R].Firestone Tire and Rubber Company,1964.
[19]徐金中,汤文辉.高速碰撞SPH方法模拟中的初始光滑长度和粒子间距[J].计算物理,2009,26(4):548-552.XU Jinzhong,TANG Wenhui.Initial smoothing length and space between particles in SPH method for numerical simulation of high-speed impacts[J].Chinese Journal of Computational Physics,2009,26(4):548-552.
[20]时党勇.基于ANSYS/LS-DYNA 8.1进行显式动力分析[M].北京:清华大学出版社,2005.
[21]白金泽.LS-DYNA3D理论基础与实例分析[M].北京:科学出版社,2005.
[22]程波,李文彬,郑宇,等.ANPyO和8701的冲击波感度对比研究[J].兵工自动化,2014(2):15-17.CHENG Bo,LI Wenbin,ZHENG Yu,et al.Study on shock sensitivities of ANPyO and 8701[J].Ordnance Industry Automation,2014(2):15-17.
[23]陶为俊,浣石.RDX-8701炸药二维冲击起爆状态的研究[C]∥第八届全国爆炸力学学术会议论文集.井岗山,2007.
[2]RASSOKHA S S.Performance calculation of shaped charges with shear-formed liners[J].Journal of Applied Mechanics,2013,80(3):979-985.
[3]王铁福,石连捷.旋压药型罩的旋转补偿效应与旋压参数关系的研究[J].爆炸与冲击,1996,16(4):361-366.WANG Tiefu,SHI Lianjie.Study on the relationship between rotation compensation effect and spinning parameter of rotary-pressed shaped charge liner[J].Explosion and Shock Waves,1996,16(4):361-366.
[4]EICHELBERGER R J.“Spin compensation”in critical review of shaped charge information:Report No.905[R].Ballistic Research Laboratories,1954:215-253.
[5]SIMON J,DIPERSIO R,EICHELBERGER R J.Shaped charge performance with linear fluted liners[R].Army Ballistic Research Lab Aberdeen Proving Ground,Maryland,1959.
[6]PUGH E M,EICHELBERGER R J.Fluted liners for shaped charges:US3726224[P].1973-4-10.
[7]王铁福,石连捷,朱鹤荣.旋压药型罩不对称织构分析[J].弹道学报,1991(3):71-73.WANG Tiefu,SHI Lianjie,ZHU Herong.Analysis of asymmetric texture for rotary-pressed shaped charge liner[J].Journal of Ballistics,1991(3):71-73.
[8]贾万明,张全孝,白志国,等.药型罩制造技术的发展[J].稀有金属材料与工程,2007,36(9):1511-1516.JIA Wanming,ZHANG Quanxiao,BAI Zhiguo,et al.Progress of manufacturing technology of shaped charge liner[J].Rare Metal Materials and Engineering,2007,36(9):1511-1516.
[9]SCHWARTZ A J,BUSCHE M J,BECKER R,et al.Role of texture in spin formed Cu shaped-charge liners[C]∥The19th International Symposium on Ballistics.Switzerland,2001:733-740.
[10]李惠明,陈智刚,侯秀成,等.阶梯式旋转EFP成形机理的数值研究[J].弹箭与制导学报,2010,30(1):115-118.LI Huiming,CHEN Zhigang,HOU Xiucheng,et al.Numerical simulation of formation mechanism of ladder-shaped rotational EFP[J].Journal of Projectiles,Rockets and Guidance,2010,30(1):115-118.
[11]黄静,张庆明.滑移爆轰作用下药型罩的变形分析[J].北京理工大学学报,2009,29(4):286-289.HUANG Jing,ZHANG Qingming.Distortion of a liner under sliding detonation[J].Journal of Beijing Institute of Technology,2009,29(4):286-289.
[12]李磊,沈兆武,李学岭,等.SPH方法在聚能装药射流三维数值模拟中的应用[J].爆炸与冲击,2012,32(3):316-322.LI Lei,SHEN Zhaowu,LI Xueling,et al.Application of SPH method to numerical simulation of shaped charge jet[J].Explosion and Shock Waves,2012,32(3):316-322.
[13]LUCY L B.A numerical approach to the testing of the fission hypothesis[J].Astronomical Journal,1977,82(12):1013-1024.DOI:10.1086/112164.
[14]LIU M B,LIU G R,ZONG Z,et al.Computer simulation of high explosive explosion using smoothed particle hydrodynamics methodology[J].Computers and Fluids,2003,32(3):305-322.
[15]РАССОХАC C,БАБКИНА.В,ЛАДОВC B,et al.Обиспользованиирифленыхоблицовоквкумулятивныхснарядахк30 mmнарезномуорудию[J].Инженерныйурнал:НаукаиИнновации,2013(14):96-107.
[16]ДУБОВСКОЙМА.Особенностиформированияструивовращающихсякумулятивныхзарядахиоценкавозможностиповышениябронебойногодействиякумулятивныхбоеприпасов:Научно-исследовательскийинститут,пообороннойтехникеСоветаМинистровСССР[R].1964.
[17]KOCH A,JAGGI P,JAUN W,et al.Study of spin-compensated shaped charges[C]∥Proceeding of the 19th International Symposium on Ballistics.2001:1501-1508.
[18]COX C M.Warhead mechanisms study[R].Firestone Tire and Rubber Company,1964.
[19]徐金中,汤文辉.高速碰撞SPH方法模拟中的初始光滑长度和粒子间距[J].计算物理,2009,26(4):548-552.XU Jinzhong,TANG Wenhui.Initial smoothing length and space between particles in SPH method for numerical simulation of high-speed impacts[J].Chinese Journal of Computational Physics,2009,26(4):548-552.
[20]时党勇.基于ANSYS/LS-DYNA 8.1进行显式动力分析[M].北京:清华大学出版社,2005.
[21]白金泽.LS-DYNA3D理论基础与实例分析[M].北京:科学出版社,2005.
[22]程波,李文彬,郑宇,等.ANPyO和8701的冲击波感度对比研究[J].兵工自动化,2014(2):15-17.CHENG Bo,LI Wenbin,ZHENG Yu,et al.Study on shock sensitivities of ANPyO and 8701[J].Ordnance Industry Automation,2014(2):15-17.
[23]陶为俊,浣石.RDX-8701炸药二维冲击起爆状态的研究[C]∥第八届全国爆炸力学学术会议论文集.井岗山,2007.