scholarly journals Numerical Simulation of Steel Target Penetration by Shaped Charge Distended Jet with a High-Polymer Liner

2017 ◽  
Vol 49 (1) ◽  
pp. 27-36 ◽  
Author(s):  
J. Y. Yi ◽  
Z. J. Wang ◽  
J. P. Yin ◽  
B. H. Chang
Keyword(s):  
Numerical Simulation ◽  
Shaped Charge ◽  
High Polymer ◽  
Steel Target ◽  
Polymer Liner

scholarly journals Study on Penetration Performance of Rear Shaped Charge Warhead

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6526
Author(s):  
Yanan Du ◽  
Guanglin He ◽  
Yukuan Liu ◽  
Zhaoxuan Guo ◽  
Zenghui Qiao
Keyword(s):  
Numerical Simulation ◽  
Experimental Verification ◽  
Simulation Method ◽  
Shaped Charge ◽  
Experimental Results ◽  
Target Plate ◽  
Depth Of Penetration ◽  
Steel Target ◽  
Shaped Charge Jet ◽  
Control Cabin

In guided munitions, the shaped charge jet (SCJ) warhead is located behind the simulation compartment (including the control cabin, the steering gear cabin, and the guidance cabin). Therefore, the order of penetration of the SCJ is the simulation cabin and the target. To study the penetration performance of the SCJ to the target plate, the numerical simulation method is used to study the penetration performance of the designed warhead for the steel target at different standoffs, and the depth of penetration (DOP) at the best standoff is obtained, that is, the DOP of the steel target is about 128 mm. Additionally, the penetration performance of the SCJ warhead to target is studied by numerical simulation and experimental verification. Numerical simulation and experimental results show that the DOP of the SCJ warhead to the steel target is 50 mm without the simulation cabin, and about 30 mm with the simulation cabin. The results show that the penetration performance of SCJ is greatly weakened under the condition of non-optimal standoff, but the rear shaped charge warhead still has a strong penetration performance after completing the penetration of the simulated cabin.

scholarly journals О постановке экспериментов по определению пробивной способности хвостовых участков кумулятивных струй

2021 ◽  
Vol 91 (5) ◽  
pp. 793
Author(s):  
С.В. Федоров
Keyword(s):  
Numerical Simulation ◽  
Continuum Mechanics ◽  
Short Distance ◽  
Axisymmetric Problem ◽  
High Strength ◽  
Shaped Charge ◽  
Two Dimensional ◽  
Penetration Effect ◽  
Steel Target ◽  
Shaped Charge Jet

According to the calculations, the penetration effect of shaped charges can be significantly increased (by 40–50 % in the case of a high-strength steel target) if due increasing the accuracy of their manufacture the lower speed threshold is reduced at which the penetration of the tail sections of the shaped-charge jet into the target is stopped. For experimental confirmation of these data, it is proposed to study in detail the penetrability of the tail sections of shaped-charge jets using cut-off rods made of high-density material located at a short distance from the shaped charge (less than its diameter) and designed to eliminate the faster part of the jet. Based on numerical simulation in the framework of a two-dimensional axisymmetric problem of continuum mechanics, possible parameters of the cut-off rods for generating solitary "tails" of shaped-charge jets with different velocities of the leading element are predicted.

Effects of Liner Material and Structure on Penetration Characteristics of Small-Diameter Shaped Charge

2019 ◽  
Vol 893 ◽  
pp. 62-68
Author(s):  
Cheng Hai Su ◽  
Qian Fei Lan ◽  
Yuan Feng Zheng
Keyword(s):  
Numerical Simulation ◽  
Penetration Depth ◽  
Structural Parameters ◽  
Small Diameter ◽  
Shaped Charge ◽  
Optimum Thickness ◽  
Liner Material ◽  
Suitable Material ◽  
Steel Target ◽  
Explosion Test

Based on the AUTODYN-2D nonlinear dynamics platform, numerical simulations andexperiments are conducted to study the effect of 44mm small-caliber shaped charge on penetrationcharacteristics. Copper as the suitable material is chosen for small-caliber shaped charges, and theinfluence of the cone and the thickness of liner on the penetration of the jet into the steel target isobtained. The results show that the penetration depth decreases with the growth of the cone angle.Moreover, with the thickness of liner increasing, the penetration depth increases first and thendecreases. Based on the numerical simulation, structural parameters of the double cone liners wereoptimized: the optimum thickness liner was 1.2mm, and the optimal upper and lower cone of thedouble-cone liner was 40° and 60°. Besides, a static explosion test that the optimized double coneof the copper-type liner penetrated 45# steel targets is performed to verify the numerical simulation.

NUMERICAL SIMULATION OF TNT CASTING IN A SHAPED CHARGE SHELL

2020 ◽  
Author(s):  
Bruna Loiola ◽  
Çiğdem Susantez ◽  
ALDELIO BUENO CALDEIRA
Keyword(s):  
Numerical Simulation ◽  
Shaped Charge

The Porosity of Liner Effect on the Shaped Charge Jet Penetration

2011 ◽  
Vol 233-235 ◽  
pp. 2785-2789
Author(s):  
Yong Hong Gao ◽  
Tian Sheng Liu ◽  
Min Rong Huang ◽  
Xiao Hui Gu
Keyword(s):  
Equation Of State ◽  
Penetration Depth ◽  
Temperature Rise ◽  
Shaped Charge ◽  
Charge Diameter ◽  
Steel Target ◽  
Armor Steel ◽  
Jet Penetration ◽  
Break Up ◽  
Shaped Charge Jet

Shocking temperature rise of the shaped charge with porous liner before collapse was calculated based on the Herrman equation of state. Shaped charges with 36mm charge diameter were used to fire at the 603 armor steel target, the penetration-standoff curves(P-S) of the shaped charge liner with 88.6% and 90.3%T.D were measured and compared. It is shown that proper porosity is helpful to lengthen the jet break up time and penetration depth，which is of significance for the application of porous liner.

Research on Temperature Change and Microstructure Evolution of Bore in Steel Target Penetrated by Copper Jets

2010 ◽  
Vol 667-669 ◽  
pp. 641-646
Author(s):  
Hao Chen ◽  
Gang Tao
Keyword(s):  
Numerical Simulation ◽  
Grain Size ◽  
Dynamic Recrystallization ◽  
Temperature Change ◽  
Microstructure Evolution ◽  
Channel Wall ◽  
Cooling Time ◽  
Steel Target

Copper fragments are found to adhere on penetration channel wall after copper jets penetrate steel target, and the research on it is helpful to know microstructure evolution of jets in the process of penetration and cooling time. This paper is based on the observation of bore in steel target penetrated by copper jets, and uses numerical simulation to study the process of copper jets penetration, then the change of temperature and grain size of jets adhered on penetration channel wall can be gotten, and the results agree with the observation of penetration channel wall taken by SEM. From the observations of copper and steel, we can get the conclusion that copper jets are not melted but have dynamic recrystallization in the process of penetration, then copper grain size increases obviously in cooling time, and twins are formed at the same time.

Simulation Study on Tapered and Spherical Shaped Charge under Underwater Explosion

2012 ◽  
Vol 157-158 ◽  
pp. 852-855
Author(s):  
Fang Yi Zhou ◽  
Tao Jiang ◽  
Wei Li Wang ◽  
Fa Min Zhan ◽  
Ke Yu Zhang
Keyword(s):  
Numerical Simulation ◽  
Stress Distribution ◽  
Simulation Study ◽  
Underwater Explosion ◽  
Shaped Charge ◽  
Damage Effect ◽  
Tapered Angle ◽  
Underwater Target ◽  
Shaped Charge Jet

For improving the damage effect to underwater target of warhead, a kind of metamorphic tapered angle shaped charge is designed, and the damge mechanism is analyzed. The physics modle of tapered and spherical shaped charge under underwater explosion is built, numerical simulation is done by LS-DYNA, the stress distribution and velocity of jet are got. The result shows that the shaped charge jet formed by this kind of structure can provide moving space for latter EFP, which improving the damage effect to target.

Simulation Study on High-Powered Shaped Charge Warhead Penetrating into Target with Water Layer

2014 ◽  
Vol 532 ◽  
pp. 342-345
Author(s):  
Shi Long Xing ◽  
Xiang Ke Huang
Keyword(s):  
Numerical Simulation ◽  
Simulation Study ◽  
Water Layer ◽  
Damage Mechanism ◽  
Shaped Charge ◽  
Shaped Charge Jet

A kind of tapered and spherical combined liner shaped charge warhead is researched, and the damage mechanism is analyzed. The physics modle of warhead to columniform hull target is build, numerical simulation is done. The result shows that the shaped charge jet formed by this structure can provide movement space, which is in favor of damaging target with water layer.

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