Residual velocities of projectiles after normally perforating the thin ultra-high performance steel fiber reinforced concrete slabs
Residual velocities of projectiles after normally perforating the thin ultra-high performance steel fiber reinforced concrete slabs
复制标题
超高性能钢纤维混凝土薄板正常穿孔后弹丸的残余速度
DOI：
10.1016/j.ijimpeng.2016.06.006
复制
发表时间：
2016-11-01
影响因子：
5.1
通讯作者：
Gong, Z. M.
中科院分区：
文献类型：
--
作者：
Peng, Y.;Wu, H.;Gong, Z. M.
预测射弹击穿混凝土屏障后的剩余速度对于防护结构来说是非常有必要的。本文对128.4 MPa超高性能钢纤维混凝土(UHP-SFRC)薄板进行了射弹穿孔试验，弹丸直径为25.3 mm，板厚度为40~100 mm。所有板均正常穿孔，高速摄像机捕捉弹丸残余速度。为了评估弹丸剩余速度，在统一框架内建立了薄混凝土板 (H/d 5) 的半解析弹丸射孔模型。所提出的模型通过当前和现有的薄混凝土板穿孔测试数据进行了验证。此外，采用统一模型来评估间隔分段混凝土板的抗冲击性，并取得了良好的一致性。 (C) 2016 Elsevier Ltd. 保留所有权利。
It is very necessary to predict the residual velocity of a projectile after perforating a concrete barrier for the protective structures. In this paper, projectile perforation test on the thin 128.4 MPa ultra-high performance steel fiber reinforced concrete (UHP-SFRC) slabs was conducted, in which the diameter of projectile was 25.3 mm and the thicknesses of slabs ranged from 40 mm to 100 mm. All the slabs were perforated normally and the projectile residual velocities were captured by high-speed camera. To assess the projectile residual velocity, a semi-analytical projectile perforation model for thin concrete slab (H/d 5) within a unified framework. The proposed model was validated by the present and existing available perforation test data on thin concrete slab. Furthermore, the unified model was employed to evaluate the impact resistance of spaced segmented concrete slabs and good agreements were achieved. (C) 2016 Elsevier Ltd. All rights reserved.