PELE弹丸靶后破片尺寸分布研究
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摘要
横向效应增强型弹丸(PELE)靶后毁伤效果与穿靶后形成的破片数量及大小密切相关。依据Mott-Grady破碎理论和PELE弹丸壳体膨胀过程假设,提出了弹丸壳体破片尺寸分布范围的理论分析方法,并通过实验回收弹体破片尺寸的统计分析,验证了理论分析方法的合理性。理论与实验研究表明,PELE弹丸壳体破片尺寸分布与壳体材料密度、破碎耗能、临界破碎应变、应变率等因素相关;破片的环向宽度和数量受内芯材料的影响较大,存在随着内芯材料的密度和弹性模量的增加前端破片环向宽度减小,数量增多,径向飞散速度变大的规律;但从实验结果看,外壳破片轴向长度则受内芯材料的影响较小,主要与弹靶碰撞速度相关。
Target plate rear damage effect is closely related to the fragment's size and quantity which are produced by penetrator with enhanced lateral effect( PELE). In order to study the factors influencing the scale of projectile shell fragments and determine the fragment distribution scale,the expansion process of PELE projectile shell was analyzed,according to the Mott-Grady fragmentation theory. The theoretical analysis method of the distribution range of the fragment scale was given. The correctness of the theoretical analysis was tested by experiments. By theoretical analysis and experimental study,the results show that projectile shell fragment size distribution is mainly affected by material density,crushing energy consumption,critical fracture strain and strain rate. The fragments width and number are greatly influenced by inner core material. With the increasing of density and elastic modulus of the inner core material,the width of front-end fragment decreases the number,the radial velocity becomes large. The shell fragment length is determined by projectile impacting target speed and less affected by the inner core material.
Target plate rear damage effect is closely related to the fragment's size and quantity which are produced by penetrator with enhanced lateral effect( PELE). In order to study the factors influencing the scale of projectile shell fragments and determine the fragment distribution scale,the expansion process of PELE projectile shell was analyzed,according to the Mott-Grady fragmentation theory. The theoretical analysis method of the distribution range of the fragment scale was given. The correctness of the theoretical analysis was tested by experiments. By theoretical analysis and experimental study,the results show that projectile shell fragment size distribution is mainly affected by material density,crushing energy consumption,critical fracture strain and strain rate. The fragments width and number are greatly influenced by inner core material. With the increasing of density and elastic modulus of the inner core material,the width of front-end fragment decreases the number,the radial velocity becomes large. The shell fragment length is determined by projectile impacting target speed and less affected by the inner core material.
引文
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[7]JI Pengyuan,WANG Haifu,ZHANG Yuanfei,et al.Influence of structure parameters on terminal effcect of small caliber PELE impacting metal target[J].Journal of Beijing Institute of Technology,2011,20(2):187-191.
[8]孟燕刚,金学科,陆盼盼,等.活性材料增强PELE杀伤效应[J].科技导报,2014,32(9):31-35.MENG Yangang,JIN Xueke,LU Panpan,et al.Lethality effects of enhanced PELE of reactive materials[J].Introduction of Science and technology,2014,32(9):31-35.
[9]PAULUS G,SCHIRM V.Impact behavior of PELE projectiles perforating thin target plates[J].International Journal of Impact Engineering,2006,33(1):566-579.
[10]VERREAULT J.Analytical and numerical description of the PELE fragmentation upon impact with thin target plates[J].International Journal of Impact Engineering,2015,76(76):196-206.
[11]GRADY D E.Fragmentation of rings and shells[M].Berlin:Springer-Verilag Berlin Heidelberg,2006:10-46.
[12]GRADY D E,OLSEN M L.A statistics and energy basedtheory of dynamic fragmentation[J].International Jounal of Impact Engineering,2003,29(1):293-306.
[13]GRADY D E.Impact failure and fragmentatin properties of tungsten carbide[J].International Jounal of Impact Engineering,1999,23(1):307-317.
[14]FAN Zijian,RAN Xianwen,TANG Wenhui,et al.The model to calculate the radial velocities of fragments after PELE penetrator perforating a thin plate[J].International Jounal of Impact Engineering,2016,95:12-16.
[15]毛亮,王华,姜春兰,等,钨合金球形破片侵彻陶瓷/DFRP复合靶的弹道极限速度[J],振动与冲击,2015,34(13):1-5.MAO Liang,WANG Hua,JIANG Chunlan,et al.Ballistic limit velocity of tungsten alloy spherical fragment penetrationg ceramic/DFRP composite target plates[J].Journal of Vibration and Shock,2015,34(13):1-5.
[2]蒋建伟,张某,门见兵,等.PELE弹侵彻过程壳体膨胀破裂的数值模拟[J].计算力学学报,2009,26(4):568-572.JIANG Jianwei,ZHANG Mou,MEN Jianbing,et al.Numerical simulation of PELE natural fragments formation[J].Chinese Journal of Cmputational Mhanics,2009,26(4):568-572.
[3]JIANG Jianwei,ZHANG Mou,MEN Jianbing,et al.Study on fragmentation and debries distribution of PELE projectile perforating thin target[C]//25th International Symposium on Ballistics.Beijing,China:IBC,2010:357-365.
[4]朱建生,赵国志,杜中华,等.PELE垂直侵彻薄靶板的机理分析[J].爆炸与冲击,2009(29):281-288.ZHU Jiansheng,ZHAO Guozhi,DU Zhonghua,et al.Mechanism of PELE projectiles perpendicularly impacting on thin target plates[J].Explosion and Shock Waves,2009(29):281-288.
[5]TU Shengyuan,WANG Junbo,AN Zhentao,et al.Influence of thickness of armor on the burst-effect of steel shell PELE[C].ICEMI,2009.
[6]凃胜元,沈晓军,王军波,等.着速和靶厚对钢弹体PELE侵彻后效影响的试验研究[J].弹箭与制导学报,2010,30(3):69-71.TU Shengyuan,SHEN Xiaojun,WANG Junbo,et al.Research on the influence of impact velocity and thickness of RHA on the penetration after effect of steel shell PELE by experiment[J].Journal of Projectiles Rockers Missiles and Guidance,2010,30(3):69-71.
[7]JI Pengyuan,WANG Haifu,ZHANG Yuanfei,et al.Influence of structure parameters on terminal effcect of small caliber PELE impacting metal target[J].Journal of Beijing Institute of Technology,2011,20(2):187-191.
[8]孟燕刚,金学科,陆盼盼,等.活性材料增强PELE杀伤效应[J].科技导报,2014,32(9):31-35.MENG Yangang,JIN Xueke,LU Panpan,et al.Lethality effects of enhanced PELE of reactive materials[J].Introduction of Science and technology,2014,32(9):31-35.
[9]PAULUS G,SCHIRM V.Impact behavior of PELE projectiles perforating thin target plates[J].International Journal of Impact Engineering,2006,33(1):566-579.
[10]VERREAULT J.Analytical and numerical description of the PELE fragmentation upon impact with thin target plates[J].International Journal of Impact Engineering,2015,76(76):196-206.
[11]GRADY D E.Fragmentation of rings and shells[M].Berlin:Springer-Verilag Berlin Heidelberg,2006:10-46.
[12]GRADY D E,OLSEN M L.A statistics and energy basedtheory of dynamic fragmentation[J].International Jounal of Impact Engineering,2003,29(1):293-306.
[13]GRADY D E.Impact failure and fragmentatin properties of tungsten carbide[J].International Jounal of Impact Engineering,1999,23(1):307-317.
[14]FAN Zijian,RAN Xianwen,TANG Wenhui,et al.The model to calculate the radial velocities of fragments after PELE penetrator perforating a thin plate[J].International Jounal of Impact Engineering,2016,95:12-16.
[15]毛亮,王华,姜春兰,等,钨合金球形破片侵彻陶瓷/DFRP复合靶的弹道极限速度[J],振动与冲击,2015,34(13):1-5.MAO Liang,WANG Hua,JIANG Chunlan,et al.Ballistic limit velocity of tungsten alloy spherical fragment penetrationg ceramic/DFRP composite target plates[J].Journal of Vibration and Shock,2015,34(13):1-5.