超高性能混凝土复合结构的抗冲击性能
Huijun Ning1,2, Huiqi Ren1, Wei Wang3
1Institute of Defense Engineering, Academy of Military Sciences (AMS), People's Liberation Army (PLA), Luoyang 471023, China.
Materials (Basel, Switzerland)
|December 9, 2023
概括
超高性能混凝土 (UHPC) 显示出优越的抗冲击能力,具有较小的石坑,但比花岩更深的透. 数字模拟证实了实验结果,并揭示了弹子的偏移因子.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 机械工程 机械工程
背景情况:
- 与传统混凝土相比,超高性能混凝土 (UHPC) 提供了优越的强度,性和耐久性.
- 超高压是耐冲击结构的理想选择,但对其复合结构冲击性能的研究是有限的.
- 了解UHPC的抗冲击性能对于保护工程设计至关重要.
研究的目的:
- 为了研究UHPC复合结构的抗冲击性能.
- 为了比较UHPC与花岩目标的撞击行为.
- 开发和验证一个数值模型来模拟射弹对UHPC的影响.
主要方法:
- 在UHPC和花岩目标上使用高速弹子进行实验性撞击测试.
- 使用ANSYS 16.0/LS-DYNA.的UHPC复合结构上的弹子冲击的数值模拟.
- 对冲击速度,角度和强化比对透深度进行参数分析.
主要成果:
- 超高压目标在弹弹撞击时表现出较小的表面石坑,但透深度大于花岩目标.
- 数字模拟结果与透深度和火山口直径的实验数据密切匹配.
- 弹子的偏斜度随着撞击角度的增加和速度的降低而增加.
- 穿透深度随着线性关系中的增强比率的增加而显著降低.
结论:
- 经验证的数值模型为分析UHPC复合结构影响提供了可靠的工具.
- 撞击速度,角度和强化比率显著影响弹子的穿透.
- 这些发现提高了保护结构的安全性和可靠性,并促进了UHPC在工程中的应用.
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