• 제목/요약/키워드: Oblique Dual-Plates

검색결과 2건 처리시간 0.02초

Yaw가 있는 긴 관통자에 대한 이중 비행경사판재의 방호성능 분석 (Protection performance of dual flying oblique plates against yawed long rod penetrator)

  • 백승훈;김승조;유요한;이민형
    • 한국군사과학기술학회지
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    • 제9권1호
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    • pp.127-134
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    • 2006
  • The protection capability against an enhanced long rod(L/D=30) with yaw is investigated numerically and compared with that of shorter one(L/D=15). In addition details of interactions between yawed long rods and oblique plate velocity are examined. Through the simulation results, we find that dual flying plates system is more effective with longer rod due to the elongated disturbance. The protection performance is more effective for the penetrator with $+6^{\circ}$ of yaw angle than that with a yaw angle of $-6^{\circ}$.

관통자에 의한 경사복판의 관통현상에서 유한요소법을 근간으로한 라그랑지 코드의 변수의 영향에 관한 연구 (A study on Effects of Parameters in the Lagrangian Code based on F.E.M. through Oblique Dual-Plates Perforation Phenomena)

  • 김하윤
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2004년도 추계학술대회
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    • pp.55-60
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    • 2004
  • This study is concerned to the perforation phenomena of the oblique dual-plate by projectile. Experiment and simulation related to that was carried out. the variables considered in this phenomena include the electrolytic zinc coated steel sheet and carbon steel rod. In the former, the confirmation and projectile velocity possible phenomena of real phenomena is done, the latter, the effect of parameter such as time-step and grid space length is analized by using the three-dimensional Lagrangian explicit time-integration finite element code, HEMP. this code use the eight node hexahedral elements and in this study, Von-Mises Criteria is used as the strength model, Mie-Gruneisen is as the Equation of State. the simulation was performed by contrast with the experiment. through the calibration of the parameter of lagrangian code, reasonable result was approached.

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