铁水泥板在低速和高速冲击负荷下的结构性能
Sandeep Sathe1, Muhammed Zain Kangda2, Mohammad Amir Khan3
1School of Civil Engineering, MIT World Peace University, Pune 411038, India.
ACS omega
|November 16, 2023
概括
这项研究表明,将更多的钢纤维和丝网层添加到铁板上,可以显著提高其对低速和高速冲击的抵抗力. 增强的面板吸收了更多的能量,并且显示的损坏较少.
科学领域:
- 材料科学 材料科学 材料科学
- 结构工程 结构工程
- 冲击力学 冲击力学
背景情况:
- 铁水泥是一种多用途的建筑材料.
- 了解其在撞击下的性能对于安全和设计至关重要.
- 优化钢筋是提高抗冲击性能的关键.
研究的目的:
- 评估铁水泥板的冲击反应和能量吸收.
- 研究钢纤维 (SF) 含量和电线网加强 (接电线网 - WWG,扩展电线网 - EWG) 对面板性能的影响.
- 在低速和高速冲击下分析故障模式.
主要方法:
- 铁水泥板 (290 mm × 290 mm × 50 mm) 的实验测试,其SF含量 (0-2%) 和电线网层 (1-3).
- 低速撞击测试使用2.5公斤的质量从0.80米下降.
- 高速撞击试验使用7.62毫米子弹,从10米处以715米/秒的速度发射.
- 记录撞击数量以检测裂纹开始/失败,并分析裂纹,和穿孔.
主要成果:
- 增加的SF含量和电线网层增强了对低速度冲击的抵抗力,需要更多的击中裂纹和故障.
- 更高的强化水平减少了高速冲击中和裂纹的面积.
- 对于不同的冲击速度,观察到不同的故障模式和裂纹模式.
结论:
- 钢纤维增强和多个电线网层显著提高了铁水泥面板的抗冲击能力.
- 该研究为设计抗冲击铁水泥结构提供了有价值的数据.
- 这些发现有助于理解在动态负载条件下的材料行为.
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