Tests for influence of side-length of a concrete target confined with hexagonal steel tubes on its anti-penetration performance#br#

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (1) : 58-64.

SONG Dianyi1,2,LIU Fei2, JIANG Zhigang2, TAN Qinghua2, SHEN Zhiqiang2

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Abstract

The steel tube-confined concrete (STCC) has a wide application prospect in protective structure.Hexagonal STCC targets have an excellent anti-penetration performance, and their anti-impact ability against both single and multiple artillery shells is superior to that of semi-infinite concrete targets.Tests for hexagonal STCC targets penetrated by 12.7 mm armor piercing projectiles (APPs) with tungsten core at impact velocities within 600 m/s—836 m/s were conducted to study the influence of side-length of steel tube on targets’ anti-penetration performance, and their failure modes and main damage parameters were obtained.The results showed that the side-length of steel tube significantly affects depth of penetration (DOP) and penetration resistance; the shorter the steel tube side-length, the smaller the DOP, the larger the penetration resistance; when the impact velocity is about 600m/s and the steel tube side-length decreases from 66 mm to 55 mm, the DOP decreases by about 19% and the penetration resistance increases by about 17%; the DOP of hexagonal STCC targets approximately linearly increases with increase in impact velocity.

Key words

confined concrete / penetration experiment / APP with tungsten core / depth of penetration (DOP) / penetration resistance

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SONG Dianyi1,2,LIU Fei2, JIANG Zhigang2, TAN Qinghua2, SHEN Zhiqiang2. Tests for influence of side-length of a concrete target confined with hexagonal steel tubes on its anti-penetration performance#br#[J]. Journal of Vibration and Shock, 2019, 38(1): 58-64

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