scholarly journals Numerical Simulation and Experimental Study on Shaped Charge Warhead of Guided Ammunition

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Guangsong Ma ◽  
Guanglin He
Keyword(s):  
Numerical Simulation ◽  
Cone Angle ◽  
Shaped Charge ◽  
Liner Material ◽  
Penetration Ability ◽  
Simulation And Experiment ◽  
Control Section ◽  
Simulation Results ◽  
And Control ◽  
Shaped Charge Jet

To study the jet penetration capability of shaped charge warhead of guided ammunition, a variable cone angle-shaped charge liner was designed. LS-DYNA software is used to simulate the penetration capability of shaped charge warhead with three different metal materials (copper, steel, and aluminum). Numerical simulation results show that the velocity of the shaped charge jet formed by the three kinds of materials is v aluminum > v copper > v steel , and the residual velocity after penetration is V steel > V aluminum > V copper , the time when the jet starts to break is tcopper > tsteel > taluminum, and the penetration completion time is Tcopper < Taluminum < Tsteel; therefore, according to the numerical simulation results, copper was selected as the liner material, and the principle prototype is made for the experiment. The results of numerical simulation and experiment show that the shaped charge warhead with copper shaped charge liner has good penetration ability and after-effect damage ability to steel target after penetrating the guidance section, steering gear section, and control section.

Based on the Technology of Shaped Charge Numerical Simulation and Experiment Research of Ice Blasting

2013 ◽  
Vol 753-755 ◽  
pp. 2704-2708
Author(s):  
Wen Yuan Meng ◽  
Xin Liu ◽  
Jun Qiang Hu
Keyword(s):  
Numerical Simulation ◽  
Yellow River ◽  
Shaped Charge ◽  
Experimental Results ◽  
The Yellow River ◽  
Experiment Research ◽  
Failure Characteristics ◽  
Simulation And Experiment ◽  
Simulation Results ◽  
Ice Failure

According to the characteristics of the Yellow River ice flood, the author using LS-DYNA numerical simulation and shaped charge technology to research the 20cm thick ice failure characteristics when a certain amount of TNT exploded underwater, analysis the result and get the best explosive blasting point, and compared the numerical simulation results with experimental results, to verify the reliability of the numerical simulation, the results may guide the research of the ice-breaking equipment that based on shaped charge technology.

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.

Autodyn-2D Simulation of Shaped Charge Jet Formation and Penetration Mechanism into Multi-Layered Shielded Target

2014 ◽  
Vol 664 ◽  
pp. 128-137
Author(s):  
Kamal Guendouz ◽  
Ayoub Sayhi ◽  
Wang Cheng
Keyword(s):  
Shell Thickness ◽  
Alpha Angle ◽  
Shaped Charge ◽  
Jet Formation ◽  
Liner Material ◽  
2D Simulation ◽  
Jet Breakup ◽  
Jet Penetration ◽  
Jet Velocity ◽  
Shaped Charge Jet

In this work, the shaped charge jet formation depends on different parameters which can has effect on jet behavior such as jet velocity, breakup and penetration. Jet radius or liner thickness, shell thickness, liner material density, α angle and stand-off distance are evaluated in purpose to investigate their effect on performance of shaped charge jet velocity and jet breakup phenomena, also we investigate the effect of stand-off distance on shaped charge jet penetration into steel target. We also studied the performance of some protective shields materials in order to assure more protection for vehicle structure against shaped charge jet penetration. For that, different materials were used as armors such as: kevlar epoxy, polyethylene, glass epoxy, steel-1006 and Al2O3 ceramic. These protective shields were evaluated in order to show their performance against shaped charge penetration into target. To do so, adopted explicit dynamic analyzing program Autodyn basing on finite element were used to simulate shaped charge jet formation and penetration. Autodyn-2D simulationshighlight the efficiency of our work comparing with the experiments done in literature and Birkhoff’s theory. In other terms, increasing in shell thickness, alpha angle and liner densityenhance jet breakup time, protective shields layered armor of steel-1006, steel 1006 with polyethylene and steel-1006 with Al2O3ceramic give more protection for structure against shaped charge jet penetration comparing with others armors.

scholarly journals Investigate the effects of magnetic fields on the penetration ability of a shaped charge jet at different standoffs

2020 ◽  
Author(s):  
Bin Ma ◽  
Zheng-xiang Huang ◽  
Zhong-wei Guan ◽  
Xin Jia ◽  
Xu-dong Zu ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Shaped Charge ◽  
Penetration Ability ◽  
Shaped Charge Jet

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.

Numerical Simulation of Slope Excavation in Highway Renovation and Expansion Project

2014 ◽  
Vol 580-583 ◽  
pp. 827-830
Author(s):  
Gen Chuan Luo ◽  
Zhong Ming He ◽  
Xin Luo ◽  
Qing Guo Hu
Keyword(s):  
Numerical Simulation ◽  
Stability Analysis ◽  
Stress And Strain ◽  
Regular Pattern ◽  
Expansion Process ◽  
Excavation Process ◽  
Slope Excavation ◽  
Object Use ◽  
Simulation Results ◽  
And Control

Slope stability analysis requires detect and control the stress and strain timely. Familiar with the slope‘s stress and strain changes in excavation process has important guiding significance for the actual construction. In this paper, choose a slope in Guangxi freeway renovation and expansion process as the research object. Use FLAC3D to analysis the stress and displacement simulation results of this slope excavation step by step. Summarize the excavation regular pattern.

scholarly journals Effects of Shell on Bore center Annular Shaped Charges Formation and Penetrating into Steel Targets

2020 ◽  
Vol 70 (1) ◽  
pp. 35-40
Author(s):  
Wenlong Xu ◽  
Cheng Wang ◽  
Jianming Yuan ◽  
Weiliang Goh ◽  
Bin Xu
Keyword(s):  
Numerical Simulation ◽  
Radial Velocity ◽  
Numerical Simulations ◽  
Penetration Depth ◽  
Axial Velocity ◽  
Shaped Charge ◽  
Shell Structures ◽  
Steel Shell ◽  
Simulation Results ◽  
Good Agreement

Annular shaped charge can efficiently create large penetration diameter, which can solve the problem of small penetration diameter of a traditional shaped charge, and thus meeting the requirements of large penetration diameter in some specific situations. In this paper, the influence of five kinds shell structures, i.e. no shell, aluminum shell with thickness of 2.0 mm and steel shell with thickness of 2.0 mm, 3.0 mm and 4.0 mm, on bore-center annular shaped charges (BCASCs) formation and penetrating steel targets was investigated by numerical simulations and experiments. The numerical simulation results are in good agreement with the experimental results. The results showed that, from no shell to aluminum shell of 2.0 mm and then to steel shell of 2.0 mm, 3.0 mm and 4.0 mm for BCASCs, the diameter and radial velocity of projectile head decrease, the axial velocity of BCASC projectiles increases gradually, the penetration diameter of the targets decreases, and the penetration depth increases. The penetration diameter caused by the BCASC with no shell is the largest, being 116.0 mm (1.16D), D is the charge diameter. The penetration depth caused by the BCASC with steel shell of 4.0 mm thickness is the deepest, being 76.4 mm (0.76D).

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.

Sign in / Sign up

Export Citation Format

Share Document