Numerical Simulation of Multifunctional Projectile Penetrating Reinforced Concrete Target Plate Based on Sensor Data Acquisition

Abstract

The main material of a type of multifunctional warhead is energy-containing material, which mainly relies on the projectile’s own kinetic energy to hit the target plate to achieve the function of penetrating reinforced concrete, so it needs the bullet material to have high strength and be able to withstand the high overload when penetrating reinforced concrete. At present, the composite energy-containing material structure with Al, Zr, Ti, and other materials as PTFE-based reducing agents is the mainstream direction of research on high-strength energy-containing materials. LS-DYNA is used to establish a simulation model to simulate and analyze the tapping power. The relationship curve between material strength and attack depth is established and compared with the experimental data of traditional steel material attack ammunition to finally determine the strength limit of energy-containing material compared with traditional attack ammunition. The simulation results show that the composite energy-containing material multifunctional projectile can accomplish the tapping task of penetrating 1.2 m reinforced concrete under the premise of ensuring that the percentage of W powder is not higher than 80%. This study has a certain reference value for the selection of energy-containing materials for multifunctional warheads. For the low-velocity penetration below 400 m/s, the effect of frictional resistance of the head as well as the sidewall on the penetration depth can be ignored, but the overload curve when considering the sidewall friction is more realistic. Using a combination of experimental and theoretical methods, the influence of the projectile material on the mass erosion of high-speed kinetic energy projectiles was studied, and the Jones erosion model based on the thermal melting principle was improved. Based on the cavity expansion theory, the calculation method of the shape evolution of the bullet head was established. The comparison with the experimental results shows that the improved model is applicable to different types of soft and hard materials and can accurately calculate the mass erosion amount, erosion depth, and shape evolution of the bullet head.

Research on the high-speed impact of projectiles on reinforced concrete equivalent targets

“…Journal of Physics: Conference Series 2720 (2024) 012038 IOP Publishing doi:10.1088/1742-6596/2720/1/012038 4 Using LS-DYNA software for dynamic simulation, the acceleration curves of projectiles with different thicknesses are obtained, as shown in Figure 2, which is basically consistent with the trend of projectile acceleration time history curve in Huang's simulation experiment [9] . And the same laminar cracking phenomenon occurs in the penetration process as Wang's experiment [10] .…”

Structural Design of MEMS Acceleration Sensor Based on PZT Plate Capacitance Detection

“…Penetration ammunition mainly relies on the kinetic energy of the warhead to invade the inside of the target; after penetrating the target, the intelligent fuze to controls the location of the projectile blast point to achieve the maximum damage effect [ 7 ]. Penetration munitions can be used in various weapon systems [ 8 ], including air force weapons such as aerial bombs and air-to-ground missiles, lethal weapons such as strategic guided missiles and ground-to-ground missiles, and naval weapons such as ship-borne cruise missiles, ship-to-ground missiles, and so on [ 9 ]. In general, penetration munitions are aimed at high-value, hardened targets and are therefore mostly used in a variety of precision strike weapons [ 10 ].…”