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J. KIMS Technol > Volume 19(5); 2016 > Article
Journal of the Korea Institute of Military Science and Technology 2016;19(5):618-628.
DOI: https://doi.org/10.9766/KIMST.2016.19.5.618   
Numerical Analysis of Deformation Characteristics in the Double-Layer Liner According to Explosive Material Distribution
Sang Ho Mun, See Jo Kim, Chang Hee Lee, Seong Lee
1Department of Mechanical Design Engineering, Andong National University
2Division of Materials Science & Engineering, College of Engineering, Hanyang University
3The 4th Research and Development Institute, Agency for Defense Development
이중층 라이너에서 폭발 재료 분포에 따른 변형 특성 수치해석
문상호, 김시조, 이창희, 이성
1안동대학교 기계설계공학과
2한양대학교 신소재공학부
3국방과학연구소 제4기술연구본부
Abstract
The development of new concepts of liners is required in order to effectively neutralize the enemy's attack power concealed in the armored vehicles. A multiple-layer liner is one of possibilities and has a mechanism for explosion after penetrating the target which is known as "Behind Armor Effect." The multiple-layer explosive liner should have sufficient kinetic energy to penetrate the protective structure and explosive material react after target penetration. With this in mind, double-layer liner materials were obtained by cold spray coating methods and these material properties were experimentally characterized and used in this simulation for double-layer liners. In this study, numerical simulations in the three different layer types, i.e., single, A/B, A/B/A in terms of the layer location were verified in terms of finite element mesh sizes and numerical results for the jet tip velocity, kinetic energy, and the corresponding jet deformation characteristics were analysed in detail depending on the structure of layer types.
Key Words: Double-Layer Liner, Explosive Material, Numerical Analysis, Jet Velocity, Deformation Characteristics


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