弹丸转速对PELE侵彻钢筋混凝土靶横向效应的影响
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摘要
为了研究弹丸转速对横向效应增强型侵彻体(PELE)侵彻钢筋混凝土靶横向效应的影响,运用ANSYS/LS-DYNA软件在着靶速度600、700和800m/s条件下,对具有不同转速的PELE侵彻钢筋混凝土靶进行数值模拟,并通过试验方法对不同着靶条件下的仿真模型进行验证。结果表明,开孔尺寸的数值模拟结果与实验结果之间的误差小于5%,仿真模型能够准确模拟PELE侵彻钢筋混凝土靶的过程;随着转速的不断提高,损失更多的转速动能转化为钢筋混凝土靶开孔破坏所需的能量,使钢筋混凝土靶的开孔尺寸增大;在同一着靶速度下,转速从10 000r/min提高至25 000r/min,开孔尺寸提高了约(8±2)%。因此,在同一着靶速度下,增加弹丸转速有利于提高PELE对钢筋混凝土靶的开孔尺寸。
To study the effect of projectile rotation rate on the lateral effect of penetrator with enhanced lateral effects(PELE)penetrating reinforced concrete target,the numerical simulation of PELE penetrating reinforced concrete target with different rotation rates was performed under the condition of three impact target velocities of 600,700 and 800m/s,and the simulation model under the conditions of different impact target was verified by testing method.The results show that the error of opening size between the simulation results and the experimental ones is less than 5%,showing that the simulation model can accurately simulate the process of PELE penetrating reinforced concrete target.With increasing the rotation rate,more rotation rate kinetic energy lost translates into the energy that used to break the reinforced concrete target and make the opening size of reinforced concrete target increase.Under the same impact target velocity,opening size is improved by(8±2)% when the rotation rate increases from 10 000r/min to 25 000r/min.Therefore,increasing projectile rotation rate is beneficial to improve the opening size of the PELE penetrating reinforced concrete target.
To study the effect of projectile rotation rate on the lateral effect of penetrator with enhanced lateral effects(PELE)penetrating reinforced concrete target,the numerical simulation of PELE penetrating reinforced concrete target with different rotation rates was performed under the condition of three impact target velocities of 600,700 and 800m/s,and the simulation model under the conditions of different impact target was verified by testing method.The results show that the error of opening size between the simulation results and the experimental ones is less than 5%,showing that the simulation model can accurately simulate the process of PELE penetrating reinforced concrete target.With increasing the rotation rate,more rotation rate kinetic energy lost translates into the energy that used to break the reinforced concrete target and make the opening size of reinforced concrete target increase.Under the same impact target velocity,opening size is improved by(8±2)% when the rotation rate increases from 10 000r/min to 25 000r/min.Therefore,increasing projectile rotation rate is beneficial to improve the opening size of the PELE penetrating reinforced concrete target.
引文
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[2]薛建锋,沈培辉,王晓鸣.弹体斜侵彻混凝土靶的跳弹及其规律研究[J].火炸药学报,2016,39(2):54-58.XUE Jian-feng,SHEN Pei-hui,WANG Xiao-ming.Research on ricochet and its regularity of projectiles obliquely[J].Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2016,39(2):54-58.
[3]叶小军.横向效应弹贯穿钢筋混凝土目标机理研究[D].南京:南京理工大学,2013.YE Xiao-jun.Functional mechanism of penetrator with enhanced lateral effect penetrating reinforced concrete[D].Nanjing:Nanjing University of Science and Technology,2013.
[4]叶小军,杜忠华,姚方堂.钢筋混凝土靶厚度影PELE侵彻效果的数值分析[J].含能材料,2014,22(5):612-616.YE Xiao-jun,DU Zhong-hua,YAO Fang-tang.Numerical simulation on influence of reinforced concrete thickness on PELE penetration[J].Chinnese Journal of Energetic Material,2014,22(5):612-616.
[5]徐立志,杜忠华,杜成鑫,等.壳体切缝的结构参数对PELE横向效应的影响[J].含能材料,2016,24(8):742-746.XU Li-zhi,DU Zhong-hua,DU Cheng-xin,et al.Effect of structure parameters of the jacket breakage on lateral effect of PELE[J].Chinnese Journal of Energetic Material,2016,24(8):742-746.
[6]叶小军,杜忠华,胡传辉,等.PELE侵彻破坏钢筋混凝土靶的数值计算与试验[J].火炸药学报,2012,35(4):86-90.YE Xiao-jun,DU Zhong-hua,HU Chuan-hui,et al.Numerical calculation and experiment of PELE penetrated and broken reinforced concrete targets[J].Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2012,35(4):86-90.
[7]Jimmy Verreault.Analytical and numerical description of the PELE fragmentation upon impact with thin target plates[J].International Journal of Impact Engineering,2015,10:196-206.
[8]Fan Z,Ran X,Tang W,et al.The model to calculate the radial velocities of fragments after PELE penetrator perforating a thin plate[J].International Journal of Impact Engineering,2016,95:12-16.
[9]朱建生,赵国志,杜忠华,等.着靶速度对PELE横向效应的影响[J].力学与实践,2007,29(5):12-16.ZHU Jian-sheng,ZHAO Guo-zhi,DU Zhong-hua,et al.The influence of impact velocity on the penetrator with enhanced lateral effect[J].Mechanics in Engineering,2007,29(5):12-16.
[10]梁民族,李翔宇,卢芳云,等.转速和着速对PELE横向效应的影响[J].弹箭与制导学报,2012,32(6):48-50.LIANG Min-zu,LI Xiang-yu,LU Fang-yun,et al.The influence of impact velocity and rotation velocity on PELE effect[J].Journal of Projectiles Rockets Missiles and Guidance,2012,32(6):48-50.