Abstract：Based on the shallow buried explosion test after penetration, numerical simulations were carried out on the explosion in concrete with charge aspect ratio of 5 in three conditions including explosion in the blast hole, explosion after penetration with and with out shell. The rationality of the numerical simulation model and parameters setting were verified by comparing the numerical simulation with the experimental results. The main factors influencing the shelled charge explosion damage effect after penetration were determined through the numerical simulation results and dimensional analysis method. The effect of initial penetration damage on the effect of explosion damage is analyzed by comparing the damage effect of explosion in the blast hole with the explosion after penetration. The effect of shell thickness on explosion damage effect was analyzed based on the numerical simulation of explosion after penetration with different shell thickness. Results show that: 1) the main factors influencing the shelled explosion effect after penetration are dimensionless impact coefficient IP, dimensionless explosion coefficient Ie and dimensionless shell thickness δ/de; 2) with the increase of IP, the effect of pressure leakage through penetration crater decreases, and the damage effect of explosion in blast hole and explosion after penetration is gradually similar; 3) the assembling effect of detonation enhances the explosion damage effect when the charge shell is thin, opposite when the shell is thick, more energy is consumed during the shell crushing process, which weakens the explosion damage effect.
孙善政，卢浩，李杰，熊自明，邱艳宇，王德荣. 侵爆作用下混凝土靶破坏效应试验与数值模拟[J]. 振动与冲击, 2022, 41(1): 206-212.
SUN Shanzheng, LU Hao, LI Jie, XIONG Ziming, QIU Yanyu, WANG Derong. Tests and numerical simulation for damage effect of concrete target under penetration and explosion. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(1): 206-212.
[1] 纪冲,龙源,高振儒,等.弹丸冲击贯穿有限厚混凝土材料靶板的背面成坑效应[J].振动与冲击,2013,32(04):85-89+101.
JI Chong, LONG Yuan, Gao Zhenru, et al. Rear face crater-forming of a limited-thickness concrete target due to projectile penetrating[J].Journal of Vibration and Shock, 2013,32(04):85-89+101.
[2] 周宁,任辉启,沈兆武,等.卵形头部弹丸侵彻钢筋混凝土的工程解析模型[J].振动与冲击,2007(04):73-76+170.
ZHOU Ning, REN Huiqi, SHEN Zhaowu, et al. Engineering analytical model for ogive-nose projectiles to penetrate into semi-infinite reinforced concrete targets[J]. Journal of Vibration and Shock, 2007(04):73-76+170.
[3] Forrestal MJ, Altman BS, Cargile JD. An empirical equation for penetrationdepth of ogive-nose projectiles into concrete targets[J]. International Journal of Impact Engineering,1994, 15(4):395-405.
[4] Forrestal MJ, Frew DJ, Hanchak SJ, et al. Penetration of grout and concrete targets with ogive-nose steel projectiles[J]. International Journal of Impact Engineering,1996, 18(5):465-476.
[5] Frew D J, Hanchak S J, Green M L, et al. Penetration of concrete targets with ogive-nose steel rods[J]. International Journal of Impact Engineering, 1998, 21(6):489-497.
[6] Li Q M，Reid S R，Wen H M，et al. Local impact effects of hard missiles on concrete target[J]. International Journal of Impact Engineering,2005,32(1-4):224-284.
[7] 李健钰. 不同强度混凝土爆破漏斗形态实验研究[D].绵阳：西南科技大学,2018.
LI Jianyu. Experimental study on the morphology of blasting funnel with different strength concrete[D]. Mianyang: Southwest University of Science and Technology,2018.
[8] Wang H, Xiao J, Zheng Y, et al. Failure and ejection behavior of concrete materials under internal blast[J]. Shock and Vibration, 2016, 1-7.
[9] Duan Z P , Zhang H Y , Lu Z J , et al. Rear-surface collapse perforation of concrete targets under buried explosion[J]. Engineering Structures,2014,59:507-511.
[10] 穆朝民,任辉启,石必明.变埋深条件下混凝土中爆炸加速度的传播规律[J].振动与冲击,2016,35(03):1-6.
MU Chaomin, REN Huiqi, SHI Biming. Investigation on the shock acceleration of concrete at different depths of burst[J]. Journal of Vibration and Shock,2016,35(03):1-6.
[11] 李重情,穆朝民,石必明.变埋深条件下混凝土中爆炸应力传播规律的研究[J].振动与冲击,2017,36(06):140-145.
LI Zhongqing, MU Chaomin, SHI Biming. Investigate on shock stress propagation in concrete at different depths under blasting[J]. Journal of Vibration and Shock, 2017,36(06):140-145.
[12] 刘彦,段卓平,王新生,等.不同厚度壳体装药在混凝土中爆炸的实验研究[J].北京理工大学学报,2010,30(07):771-773+848.
LIU Yan, DUAN Zhuoping, WANG Xinsheng, et al. Experiments on explosion of explosives with different thickness shells in concretes[J]. Transactions of Beijing Institute of Technology,2010,30(07):771-773+848.
[13] 王新生,黄风雷,刘彦,等.大长径比带壳装药爆炸毁伤混凝土试验[J].兵工学报,2009,30(S2):251-254.
WANG Xinsheng, HUANG Fenglei, LIU Yan, et al. Experiment on large length-diameter ratio shell charge explosion and damage in concrete[J]. ACTA AMAMENTARII, 2009,30(S2):251-254.
[14] 王新生,黄风雷,汪庆桃.带壳装药爆炸毁伤混凝土的数值模拟[J].爆破,2011,28(02):9-12+34.
WANG Xinsheng, HUANG Fenglei, WANG Qingtao. Numerical simulation for shell charge explosionand damage in concretes[J]. Blasting, 2011,28(02):9-12+34.
[15] 杨广栋,王高辉,卢文波,等.侵彻与爆炸联合作用下混凝土靶体的毁伤效应分析[J].中南大学学报(自然科学版),2017,48(12):3284-3292.
YANG Guangdong, WANG Gaohui, LU Wenbo，et al. Damage characteristics of concrete structures under the combined loadings of penetration and explosion[J]. Journal of Central South University (Science and Technology),2017,48(12):3284-3292.
[16] 冯春,李世海,郝卫红,等.基于CDEM的钻地弹侵彻爆炸全过程数值模拟研究[J].振动与冲击,2017,36(13):11-18+26.
FENG Chun, LI Shihai, HAO Weihong. Et al. Numerical simulation for penetrating and blasting process of EPW based on CDEM[J]. Journal of Vibration and Shock, 2017,36(13):11-18+26.
[17] 李世民,李晓军.几种常用混凝土动态损伤本构模型评述[J].混凝土,2011(06):19-22.
LI Shimin, LI Xiaojun. Review on current dynamic damage constitutive models of concrete[J]. Concrete, 2011(06):19-22.
[18] 刘磊,郭锐,裴善报,等.柱形装药水下爆炸远场冲击波压力峰值分布[J].振动与冲击,2016,35(17):66-70+76.
LIU Lei, GUO Rui, PEI Shanbao, et al.Far-field shock wave peak pressure distribution for underwater explosion of cylindrical charges[J]. Journal of Vibration and Shock, 2016,35(17):66-70+76.
