摘要
双锥聚能装药对装甲目标具有较强的毁伤效应,试验及高精度仿真对双锥聚能装药毁伤性能的改进具有重要意义。为研究不同结构及材料双锥形药型罩聚能装药对钢靶板侵彻性能的影响,设计了5种不同结构的双锥形药型罩,同时考虑不同药型罩材料(紫铜、高熵合金)及壳体对双锥药型罩聚能射流侵彻性能的影响,开展了双锥药型罩射流侵彻钢靶板的静破甲试验。基于流体弹塑性控制方程组,构造了适用于聚能射流形成及侵彻仿真的高精度欧拉算法,集成算法为计算程序并对试验工况进行模拟。数值模拟与试验结果相互对比,验证了自主构造的高精度数值方法的准确性。研究结果表明:对于不同结构的紫铜双锥形药型罩,其射流头部速度伴随着药型罩内锥角的增大而减小,射流长度逐渐变小,有效侵彻质量及侵彻深度逐渐增大。对于相同结构的紫铜与高熵合金药型罩,其聚能射流侵彻口径及穿深差异不大。高熵合金射流头部速度更大,侵彻口径从上到下较为一致。
Biconical shaped charge has a stronger destructive effect on armored targets,and tests and high-precision simulation are of great significance for improving destructive performance of biconical shaped charge.Here,to investigate effects of different structures and materials of biconical shaped charges on penetration performance of steel target plates,5 different structures of biconical shaped charges liners were designed.At the same time,effects of different charge liner materials of copper and high entropy alloy as well as shells on penetration performance of biconical shaped charge jet were considered,and static armor penetration tests of steel target plates were conducted using biconical shaped charges.Based on fluid elastoplastic governing equations,a high-precision Euler algorithm suitable for simulating formation and penetration of shaped charge jet was constructed.The algorithm was integrated as a computational program to simulate test working conditions.Numerical simulation results and test ones were compared to verify the correctness of the independently constructed high-precision numerical method.The study results showed that for different structures of copper biconical shaped charge shields,with increase in inner cone angle,their jet head velocities decrease,jet lengths gradually decrease,effective penetration mass and penetration depth gradually increase;for copper and high entropy alloy shaped charge liners with the same structure,differences in their shaped charge jets’penetration diameters and depths are not large,high entropy alloy jet has a higher head velocity and a more consistent penetration diameter from top to bottom.
作者
赵富裕
王成
王泽宇
徐文龙
ZHAO Fuyu;WANG Cheng;WANG Zeyu;XU Wenlong(State Key Laboratory of Explosion Science and Safety Protection,Beijing Institute of Technology,Beijing 100081,China;Institute for Advanced Technology,Shandong University,Jinan 250061,China)
出处
《振动与冲击》
北大核心
2025年第3期150-162,181,共14页
Journal of Vibration and Shock
基金
国家自然科学基金(12221002)。
关键词
双锥药型罩
聚能射流
射流形成及侵彻
钢靶板
高精度仿真
biconical shaped charge liner
shaped charge jet
jet formation and penetration
steel target plate
high-precision simulation
