| Design and Performance Analysis of Environment Friendly Double Core Bullets for Small Arms |
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Jun-Hee Hong, Tak-Soon Jang, Chang-Bin Song, Byung-In Kim |
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| 친환경 소화기용 탄심 재료 및 2중 구조 설계 분석 |
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홍준희, 장탁순, 송창빈, 김병인 |
1충남대학교
2방위사업청
3공주대학교 |
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| Abstract |
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This paper focuses on possibility to design and fabrication new combination of bullet core to substitute current toxic material of heavy metal such as lead by environment-friendly ones. The core is designed as dual structure to manipulate the core center of gravity easily by combining materials, which of basis is tungsten of low cost and easily acquired. Those combinations are W-M series such as W-Cu, W-Sn, W-Cu-Sn, and W-Cu-Ni to target the density of lead, $11.34g/cm^3$ through powder-metallurgy. Out of four, combination of W-Cu-Ni shows the highest compression density of 96% and is confirmed as the most suitable substitution for lead due to the excellent property of matter and sintering. All combination samples is simulated on the PRODAS software for designing and structure analysis by adjusting the center of gravity of dual core samples forward and backward. The simulations confirm the similarity of current bullet core with respect to properties of mass, aero dynamics, and flying stability. |
| Key Words:
Heavy Metal, Bullet, Environment-friendly Metals, Combining Materials, the Center of Gravity |
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