摘要
为研究超高速侵彻下金属蜂窝管约束混凝土结构的抗侵彻性能,利用二级轻气炮开展了1 500 m/s附近弹体侵彻试验,使用物质点法模拟侵彻过程并对靶体和弹体参数的合理性进行验证,并利用该方法研究了蜂窝管壁厚、高度、直径和材料等参数对靶体抗侵彻性能的影响规律。数值计算结果表明:物质点法可以准确模拟高速侵彻过程,模拟结果与试验结果的相对误差小于10%。通过正交分析得到影响侵深的因素的显著程度由强到弱依次为蜂窝管特征管深、特征内径、特征壁厚、材料;影响开坑半径的因素的显著程度由强到弱依次为蜂窝管特征壁厚、特征管深、材料、特征内径。对于本文所采用的弹体,根据优化结果分析得到了综合因素最优的组合。
To investigate the penetration resistance of metal honeycomb tube-confined concrete structures under hypervelocity impact,penetration experiments were conducted using a two-stage light gas gun with projectile velocities near 1500 m/s.The material point method(MPM)was employed to simulate the penetration process and validate the parameters of target and projectile.This method was further used to analyze the effects of honeycomb tube parameters,including wall thickness,height,diameter,and material,on the penetration resistance of the target structure.Numerical simulations showed that MPM can accurately simulate high-velocity penetration processes,with simulation results deviating from experimental data by less than 10%.Through orthogonal analysis,the factors influencing penetration depth were ranked in descending order as follows:characteristic tube depth,characteristic inner diameter,characteristic wall thickness,and material.For the cratering effect,the primary influencing factors were identified as characteristic wall thickness,characteristic tube depth,material,and characteristic inner diameter.For the projectiles tested in this study,optimization results indicated that a combination of 4 mm wall thickness,150 mm height,30 mm incircle diameter,and tungsten alloy demonstrated the best penetration resistance,reducing penetration depth by 25.1%compared to plain concrete.A combination of 4 mm wall thickness,150 mm height,90 mm incircle diameter,and aluminum exhibited superior resistance to the cratering effect,decreasing crater radius by 28.7%compared to plain concrete.Multi-objective optimization analysis determined the optimal overall configuration to be:4 mm wall thickness,150 mm height,30 mm mm incircle diameter,and aluminum.
作者
李孝臣
纪玉国
李超
李杰
蒋海明
王明洋
李干
LI Xiaochen;JI Yuguo;LI Chao;LI Jie;JIANG Haiming;WANG Mingyang;LI Gan(State Key Laboratory of Disaster Prevention&Mitigation of Explosion&Impact,Army Engineering University of PLA,Nanjing 210007,Jiangsu,China)
出处
《爆炸与冲击》
北大核心
2025年第12期1-14,共14页
Explosion and Shock Waves
基金
国家自然科学基金(11972045)。
关键词
蜂窝管约束混凝土
抗侵彻能力
物质点法
正交分析
honeycomb tube-confined concrete
anti-penetration capability
material point method
orthogonal analysis
