The damage pattern of metal diaphragms containing prefabricated damage under high impact has a direct impact on the ability of the secondary light air cannon to achieve high impact effects. In this paper, based on the secondary light air cannon experimental device, the Coupled Euler-Lagrange (CEL) method was used to numerically simulate the action of blast shock wave on the metal diaphragm containing prefabricated damage, and different structural forms of the diaphragm were designed by controlling the groove depth and groove length of the metal diaphragm, and the damage forms of the diaphragm of different structures under the action of the blast shock load and laws of bullet movement were explored.The study shows that with the increase of the groove depth, metal diaphragms with prefabricated damage are more prone to fracture and perforation. At the same time, the bullet velocity, acceleration, and displacement are increased. Groove length presents two different effects, when groove length is smaller, the diaphragm’s fracture failure is concentrated in a smaller hole, the shock wave in a more concentrated way through the diaphragm, so that the dynamic performance of the bullet is better; when groove length is larger, the fracture and perforation of the diaphragm is easier, and the dynamic response of the bullet is enhanced, which is better than the case of small groove length.
CHENJianliang, LIJicheng, QUMing, et al. A numerical simulation analysis for destruct effect of blast load on large complex warship structure[J]. Transactions of Beijing Institute of Technology, 2023, 43(11): 1176-1186. (in Chinese)
WUChunyao, SONGChunming, LIGan, et al.Pressure threshold and influencing factors of high-pressure diaphragm breaking[J].Acta Armamentarii, 2024, 45(9): 3307-3316.(in Chinese)
[5]
JEONGJ Y, LEEJ, YEOMS, et al.A study on the grooving process of a cross-scored rupture disc[J].International Journal of Precision Engineering and Manufacturing, 2012, 13(2): 219-227.
[6]
JEONGJ Y, JO W, KIMH, et al.Structural analysis on the superficial grooving stainless-steel thin-plate rupture discs[J].International Journal of Precision Engineering and Manufacturing, 2014, 15(6): 1035-1040.
[7]
ZHANGS, TANGZ, LIJ, et al.Effects of equivalence ratio, thickness of rupture membrane and vent area on vented hydrogen-air deflagrations in an end-vented duct with an obstacle[J].International Journal of Hydrogen Energy, 2019, 44(47): 26100-26108.
LUZhaijun, FENGShuying, LIUJiefu, et al.Study on the factors influencing the bursting performance of domed cross-scored rupture discs[J].Engineering Blasting, 2023, 29(4): 114-121.(in Chinese)
ZHANGHongyan, CAIXuanming, MATiehua, et al. Damage mode and mechanism for membrane of discharge hole of high pressure vessel under high energy gas impact load[J]. Journal of Vibration and Shock, 2019, 38(23): 146-151.(in Chinese)
LIYanchao, XUPeng, CAIXuanming, et al. Mechanical response characteristics of diaphragms with prefabricated damage under explosive loading[J]. Journal of Ordnance Equipment Engineering, 2020, 41(12): 149-154.(in Chinese)
YUWenjun, CHENShengyun, DENGShuxin, et al. Numerical simulation of the propagation law of explosion shock wave in a variable cross-section channel[J]. Journal of Ordnance Equipment Engineering, 2024, 45(2): 166-173.(in Chinese)
[16]
LIUF, HUANGC Y, XINK, et al. Study on the Propagation law of explosion shock waves in closed variable-section tube under high-pressure environment[J]. Journal of Vibration Engineering & Technologies, 2024, 12(6): 7249-7264.
SUNYuanxiang, TIANJunhong, ZHANGZhifan, et al. Experiment and numerical simulation study on the near-field underwater explosion of aluminized explosive[J] Journal of Vibration and Shock, 2020, 39(14): 171-178.(in Chinese)
[19]
HUANGZ, DOUS, RENX, et al. Implosion mechanisms of metallic cylindrical shells subjected to combined explosive loading and hydrostatic pressure[J]. Ocean Engineering, 2024, 313: 119397.
ZHAOQifeng, ZHUYurong, TANShushun, et al. Experiment of measuring rupture pressure of metal diaphragm of two-stage light gas gun[J].Modern Applied Physics, 2024, 15(5): 131-136.(in Chinese)
PANTeng, BIANXiaobing, YUANMingzheng, et al. Dynamic response of polyurethane-hemispherical sandwich structures under the action of explosive shock wave[J].Acta Armamentarii, 2023, 44(12): 3580-3589. (in Chinese)
ZHANGXiaoqing, ZHANGQinghui, HUANGXiao, et al. Numerical study of the underwater explosion near a steel plate using the CEL method[J]. Ship Science and Technology, 2022, 44(11): 8-11.(in Chinese)
SUNYanxin, WANGCheng, WANGHaoyu, et al. Numerical simulation and experimental research on the damage effect of high-strength concrete under explosion load[J]. Chinese Journal of Theoretical and Applied Mechanics, 2024, 56(11): 3243-3261. (in Chinese)
DENGGuoqiang, ZHANGMengmeng, GAOWeiliang. Comparative analysis on several air EOSs under strong action[J]. Protective Engineering, 2021, 43(5): 1-7.(in Chinese)
DENGYunfei, ZHANGYong, WUHuapeng, et al. Dynamic mechanical properties and modification of J-C constitutive model of 6061-T651 aluminum alloy[J]. Journal of Mechanical Engineering, 2020, 56(20): 74-81.(in Chinese)
CAOXiang, TANGJiani, WANGZhu, et al. Effect of damage evolution on the fragmentation process of ductile metals[J]. Explosion and Shock Waves, 2020, 40(1): 66-73.(in Chinese)
ZHUSunke, HUANGDeming, WANGQiulin, et al. Multi-objective optimization of front energy absorption device with J-C damage in low-speed collision[J]. Machinery Design & Manufacture, 2025(1): 258-264. (in Chinese)