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The potential of rubber materials as an inhibitor to suppress jet formation of the shaped charge warhead

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Abstract

In this paper, as a measure to protect shaped charge, NBR whch is a hyperelastic material, was considered as a target material into which a shaped charge warhead having relatively high speed was impacted. During impact, to what extent NBR can infiltrate into the liner cavity of shaped charge was numerically investigated. The Ogden model combined with the relaxation modulus for NBR was applied in LS-DYNA analysis for the collision between shaped charge and NBR. As a result, the maximum infiltration depth by NBR into the liner cavity was investigated upon the shaped charge stop. The inhibitory effect of the infiltration depth by NBR on jet formation was examined through numerical simulation for jet formation using 2D axisymmetric ALE technique. It was verified from the flash X-ray experiment where a silicone rubber having similar hardness with NBR was used as an inhibitor against jet formation.

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Acknowledgments

This work was supported by the Agency for Defense Development Grant funded by the Korean Government.

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Authors and Affiliations

  1. Department of Mechanical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea

    Jaehyun Joo & Jeong Whan Yoon

  2. Ground Technology Research Institute, Agency for Defense Development, Yuseong, P.O. Box 35, Daejeon, 34186, Korea

    Jaehyun Joo

  3. School of Engineering, Deakin University, Geelong Waurn Ponds, Melbourne, VIC, 3220, Australia

    Jeong Whan Yoon

Authors
  1. Jaehyun Joo
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  2. Jeong Whan Yoon
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Correspondence to Jeong Whan Yoon.

Additional information

Jaehyun Joo received M.S. from Department of Aeronautical Engineering of Inha University, Incheon, Korea and has been working at Ground Technology Research Institute of Agency for Defense Development (ADD). He is also a Ph.D. student of Department of Mechanical Engineering in KAIST. His research interests include high velocity impact experiment and numerical simulation.

Jeong Whan Yoon is a Professor of Mechanical Engineering, KAIST, Republic of Korea. He received his Ph.D. degree at Department of Mechanical Engineering, KAIST in 1997. His research interests include high reliability design and manufacturing for lightweight materials and structures. He is in charge of High Speed Mechanical Properties Data Center at KAIST. He is an Associate Editor of International Journal of Plasticity and is a fellow of The Korean Academy of Science and Technology. His H-index is 56 with over 12000 citations.

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Joo, J., Yoon, J.W. The potential of rubber materials as an inhibitor to suppress jet formation of the shaped charge warhead. J Mech Sci Technol 38, 1329–1340 (2024). https://doi.org/10.1007/s12206-024-0227-5

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  • DOI: https://doi.org/10.1007/s12206-024-0227-5

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