- Volume 40 Issue 3
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Evaluation of Ballistic Performance of Ceramic-Tile-Inserted Metal Block
세라믹 타일이 삽입된 금속 블록의 최적 방호구조 연구
- Lee, Seunghwan (Dept. of Mechanical Engineering, Sejong Univ.) ;
- Lee, Minhyung (School of Mechanical and Aerospace Engineering, Sejong Univ.)
- Received : 2015.08.31
- Accepted : 2016.01.11
- Published : 2016.03.01
A numerical simulation has been performed for the penetration of a long-rod penetrator into a metal block (ceramic-tile-inserted 4340-steel plate). The impact velocity is 1.5km/s at a normal incidence angle. The first two validations are conducted for a semi-infinite block measuring the depth of penetration (DOP). The material model of ceramic is the JH-2 (Johnson-Holmquist) model. The predicted DOP values are in close agreement with the experimental data. Then, the primary simulation is performed by varying the position of the confined ceramic tile for three types of thickness of ceramic tile. The residual velocity, residual mass and residual kinetic energy of the long-rod are obtained from the simulation. Based on these predicted values, the trend of the ballistic performance of the protective structure is estimated. In addition, the mass efficiency is calculated in order to determine the performance of the ceramic-tile-inserted metal block. Finally, the optimum protective structure is identified.
DOP;Ballistic Performance;Mass Efficiency;Optimum Protective Structure
Supported by : 국방과학연구소
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