Study on the Effect of PTFE/Cu Composite Material Preparation Process on Penetration Performance

Area of Science:

• Materials Science
• Mechanical Engineering
• Ballistics

Background:

• Traditional metal liners produce slender jets with consistent diameter and good ductility, effective for target penetration.
• PTFE/Cu liners, depending on preparation and density, exhibit varying radial expansion, potentially altering jet head behavior during target impact.
• Understanding these differences is crucial for optimizing shaped charge performance.

Purpose of the Study:

• To numerically simulate and experimentally validate the penetration characteristics of PTFE/Cu liners with varying preparation processes into steel targets.
• To analyze the influence of different preparation methods and liner densities on jet formation and target interaction.
• To compare the damage effects of jets from PTFE/Cu liners with traditional metal liners.

Main Methods:

• Numerical simulations were performed on PTFE/Cu liners prepared via different processes, focusing on steel target penetration.
• Experimental tests involving jet penetration of steel targets using PTFE/Cu shaped charge liners processed differently were conducted.
• Comparative analysis of simulation and experimental results to validate findings.

Main Results:

• Different preparation processes for PTFE/Cu liners lead to distinct jet radial expansion characteristics.
• Liner density significantly affects the jet's behavior and its interaction with the steel target.
• The observed radial expansion of PTFE/Cu jets results in different damage patterns compared to traditional metal jets.

Conclusions:

• The preparation process and density of PTFE/Cu liners are critical factors governing jet formation and penetration performance.
• PTFE/Cu liners offer alternative penetration characteristics due to their unique radial expansion behavior.
• Numerical simulations provide a reliable basis for understanding and predicting the performance of novel liner materials.