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<p>To investigate the effect of initiation points on a 70&#xa0;mm-class small multiple explosively formed penetrator (MEFP) warhead designed to form penetrators in the circumferential direction, numerical simulations using Autodyn-3D and experimental tests were conducted under four different initiation conditions: a single-point initiation at the warhead center and dual-point initiations with varying separation distances. This analysis revealed that penetrators formed near the center of the warhead exhibited higher kinetic energy under dual initiation conditions compared to the single initiation condition. Furthermore, numerical simulations indicated that the dispersion angle of the penetrators varied depending on the initiation conditions. Penetration tests on steel plate targets confirmed the effective penetration capability of the penetrators, and the dispersion characteristics observed in the tests were consistent with the numerical results. Additionally, tests using simulated warhead targets demonstrated that adjusting the initiation points allowed the penetrators’ impact points to be concentrated, thereby potentially enhancing target neutralization capability.</p>

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Study on the Effect of Initiation Points on a Newly Designed Small MEFP Warhead

  • 期刊论文

  • 发表日期：

    2026年4月25日

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  • Byeong-Kwan So,
  • Hong-Jip Kim

摘要

To investigate the effect of initiation points on a 70 mm-class small multiple explosively formed penetrator (MEFP) warhead designed to form penetrators in the circumferential direction, numerical simulations using Autodyn-3D and experimental tests were conducted under four different initiation conditions: a single-point initiation at the warhead center and dual-point initiations with varying separation distances. This analysis revealed that penetrators formed near the center of the warhead exhibited higher kinetic energy under dual initiation conditions compared to the single initiation condition. Furthermore, numerical simulations indicated that the dispersion angle of the penetrators varied depending on the initiation conditions. Penetration tests on steel plate targets confirmed the effective penetration capability of the penetrators, and the dispersion characteristics observed in the tests were consistent with the numerical results. Additionally, tests using simulated warhead targets demonstrated that adjusting the initiation points allowed the penetrators’ impact points to be concentrated, thereby potentially enhancing target neutralization capability.