Hitoshi Miyoshi, Hiromichi Ohba, Hideki Kitamura, Tatsuya Inoue, and Tetsuyuki Hiroe
三好 仁，大羽博通，北村秀樹，井上達也，廣江哲幸
p.340-345
Abstract
Experiments and simulations of linear shaped charges (LSCs) have been conducted to improve the penetration performance and minimize collateral damage by fragments. Annealed tough pitch copper was selected for an appropriate liner material. The penetration depth increased by 50 %, compared to current LSCs. The detonation effects of explosives change the liner into the jet and slug. But, the case is transformed into fragments, which set up undesirable damages. Polyvinyl chloride was adopted as the case material to reduce damage by fragments. No fragments were generated when the newly-designed LSCs were shot. With AUTODYN, the Euler solver for 2D calculation and the SPH (smoothed particle hydrodynamics) and Lagrange solver for the 3D were adopted. From the simulations, the process of the penetration was verified and the slug with high velocity seems to have the ability of penetration. The jet profile was confirmed by the 3D simulation of the SPH solver.
リニアシェイプトチャージ(LSC)の侵徹性能向上と破片生成低減に関する研究を行った。侵徹性能に関しては，ライナに熱処理したタフピッチ銅を使うことで50%の威力向上が得られた．また，ケースの材質を銅から塩ビに変えることで破片生成が皆無にできた。2次元Eulerと3次元SPH，Lagrange solverを使ったシミュレーションで試験結果の的確な評価できた。特に，高速のスラグも侵徹能力があることが確認できた。また，SPH solverを採用することにより，LSCジェットの3次元挙動が把握できるようになった。
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Keywords
Linear shaped charges, Target penetration, Stand-off distance, SPH solver
