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Simulation Study on Expansive Jet Formation Characteristics of Polymer Liner
Jianya Yi1,2, Zhijun Wang3, Jianping Yin4
1School of Mechatronic Engineering, North University of China, Taiyuan 030051, China. yijianya513@126.com.
Materials (Basel, Switzerland)
|March 7, 2019
Summary
This study explores polymer liners for shaped charge warheads. Polycarbonate (PC) liners show the most promising results, forming expansive jets with the largest diameter and highest compactness for improved armor penetration.
Area of Science:
- Materials Science
- Mechanical Engineering
- Explosives Engineering
Background:
- Shaped charge warheads are crucial for penetrating armored targets.
- Traditional metal liners have limitations in forming effective jets.
- Polymer liners offer a potential alternative for enhanced warhead performance.
Purpose of the Study:
- To investigate the expansive jet formation characteristics of polymer liners.
- To compare the performance of polytetrafluoroethylene (PTFE), nylon (PA), and polycarbonate (PC) liners.
- To evaluate the impact of material properties on jet expansivity and compactness.
Main Methods:
- Utilized the smooth particle hydrodynamics (SPH) method for numerical simulations.
- Employed AUTODYN finite element software for detailed analysis.
- Validated simulation results with experimental data.
Main Results:
- Polymer jets demonstrated varying degrees of expansivity.
- Polycarbonate (PC) jets exhibited the largest expansive diameter and highest head compactness.
- Nylon (PA) jets had the smallest expansive diameter, while PTFE jets showed intermediate expansivity with lower compactness.
Conclusions:
- Polymer liners can form expansive jets suitable for shaped charge applications.
- Material properties significantly influence jet characteristics, impacting warhead effectiveness.
- PC liners present superior expansive jet formation, suggesting potential for advanced armor penetration.
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