摘要
为了探究一种以紫铜作为药型罩材料的周向多线性爆炸成型弹丸侵彻毁伤规律,用25 mm口径火炮发射一种长径比为1∶5的紫铜EFP等效弹丸,分别从紫铜弹丸1000~1700 m/s的着靶速度和0°~70°的着靶角度两方面研究了其对Q235钢的侵彻毁伤规律,建立了紫铜杆式弹丸侵彻Q235钢靶的仿真模型,拟合出了实验所用紫铜的Johnson-Cook本构模型参数及断裂失效参数,并且利用侵彻试验结果对仿真模型的准确性进行验证。研究结果表明:该拉伸试验得到的Johnson-Cook本构模型参数及断裂失效参数能够较为准确地描述紫铜在侵彻过程中的断裂失效行为;在800~2000 m/s时,紫铜EFP模拟弹丸侵彻深度随侵彻速度的增加呈线性增加;弹丸着靶角为40°时,弹丸偏转角达到最大6.35°,弹丸着靶角在10°~30°之间时,弹丸侵彻深度能达到最大。该研究可为周向多线性紫铜爆炸成型弹丸战斗部的威力设计提供参考。
In order to explore the penetration damage law of a circumferential multi-linear explosively-formed projectile(EFP)with red-copper as liner material,a red-copper EFP equivalent projectile with length-diameter ratio of 1∶5 was fired by 25 mm-caliber gun.The damage law of the red-copper projectile penetrating Q235 steel was studied from two aspects(e.g,the impact speed of the red copper projectile from 1000 m/s to 1700 m/s and the impact angle from 0 to 70),and the penetration law of red-copper rod projectile was established.The Johnson-Cook constitutive-model parameters and fracture-failure parameters of red copper used in this experiment were fitted,and the accuracy of the simulation model was verified by the penetration test results.The results show that the Johnson-Cook constitutive-model parameters and fracture-failure parameters obtained from this tensile test can accurately describe the fracture failure behavior of red-copper during penetration.At 800-2000 m/s,the penetration depth of copper EFP simulated-projectile increases linearly with the increase of penetration speed.When the impact angle of the projectile is 40,the deflection angle of the projectile reaches the maximum 6.35.When the impact angle of the projectile is between 10°and 30°,the penetration depth of the projectile can reach the maximum.This study can offer reference for the power design of circumferential multi-linear EFP warhead.
作者
许猛
杜忠华
刘宇珩
徐立志
董朋超
XU Meng;DU Zhonghua;LIU Yuheng;XU Lizhi;DONG Pengchao(Institute of Equipment Engineering,Shenyang Ligong University,Shenyang 111000,China;School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《弹道学报》
CSCD
北大核心
2024年第1期70-77,共8页
Journal of Ballistics
基金
国家自然科学基金青年基金项目(12202207)
中国博士后科学基金面上项目(2022M711623)
江苏省自然科学基金青年基金项目(BK20220968)
冲击与安全工程教育重点实验室(宁波大学)开放基金(CJ202201)
工程材料与结构冲击振动四川省重点实验室开放基金(22kfgk03)。
