多边形钢管约束混凝土靶抗侵彻性能试验研究

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (13) : 14-19.

论文

蒙朝美1, 2，宋殿义1，蒋志刚1，刘飞1，谭清华1

作者信息 +

Tests for anti-penetration performance of polygonal steel tube-confined concrete targets

MENG Chaomei 1, 2, SONG Dianyi1, JIANG Zhigang1, LIU Fei1, TAN Qinghua1

Author information +

文章历史 +

摘要

钢管约束混凝土的抗侵彻性能优于普通混凝土。为了研究钢管形状对抗侵彻性能的影响，进行了12.7mm硬芯枪弹（撞击速度600m/s-830m/s）侵彻正六边形、正方形和圆形钢管约束混凝土靶试验，得到了靶的破坏模式和主要损伤参数。结果表明：正六边形钢管约束混凝土靶的抗侵彻性能优于圆形和正方形钢管约束混凝土靶，含钢率为9.75%时，正六边形靶与圆形靶相比，侵彻深度可减小约11%，侵彻阻力增大约11%；多边形（正六边形和正方形）钢管约束混凝土靶的破坏模式与圆形钢管约束混凝土靶有所不同，其漏斗坑表面裂纹主要分布在对角线附近，核心混凝土侧面裂纹多而细，但无明显主裂纹；多边形钢管约束混凝土靶的侵彻深度随撞击速度近似线性增大，且偏心率小于0.35时，弹着点偏心距对侵彻深度的影响较小。

Abstract

Steel tube-confined concrete (STCC)’s anti-penetration performance is superior to ordinary concrete’s. In order to study effects of steel-tube’s shape on STCC’s anti-penetration performance, tests for 12.7mm hard core bullets with a speed of 600m/s-830m/s penetrating hexagonal, square and circular STCC targets were conducted to detect their failure modes and main damage parameters. The results showed that hexagonal STCC targets’ anti-penetration performance is superior to circular and square STCC targets’; when the steel-containing ratio is 9.75%, the depth of penetration (DOP) of hexagonal STCC targets decreases by 11% compared with circular STCC targets, and the former’s penetration resistance increases by 11%; the failure modes of polygonal (hexagonal and square) STCC targets are different from those of circular STCC targets, the former’s cracks at surface of funnel pits are mainly distributed nearby their diagonals, there are a lots of small cracks at sides of core concrete but no obvious major cracks; polygonal STCC targets’ DOPs increase almost linearly with increase in impact velocity; the impact point eccentricity has little effect on DOP when the ratio of eccentricity is less than 0.35.

导出引用

蒙朝美1, 2，宋殿义1，蒋志刚1，刘飞1，谭清华1. 多边形钢管约束混凝土靶抗侵彻性能试验研究[J]. 振动与冲击, 2018, 37(13): 14-19

MENG Chaomei 1, 2, SONG Dianyi1, JIANG Zhigang1, LIU Fei1, TAN Qinghua1. Tests for anti-penetration performance of polygonal steel tube-confined concrete targets[J]. Journal of Vibration and Shock, 2018, 37(13): 14-19

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