桥接(联网)
材料科学
宏
结构工程
纤维混凝土
有限元法
牵引(地质)
打滑(空气动力学)
钢筋混凝土
纤维
弯曲
复合材料
断裂(地质)
计算机科学
工程类
机械工程
程序设计语言
计算机网络
航空航天工程
作者
Yiqun Huang,Jian-shan Huang,Wei Zhang,Xiang Liu
标识
DOI:10.1016/j.compstruct.2023.116750
摘要
In this study, several three-point-bending (TPB) experiments were conducted to investigate the influence of fiber content on the fracture behavior of hooked-end steel fiber-reinforced concrete (SFRC). Subsequently, a numerical meso-model was proposed based on the application of the cohesive/volumetric finite element method, which allows the pervasive fracture along non-prescribed trajectories to be captured accurately. The bond-slip relation and traction-separation relation of the fiber–concrete interface were both considered. Consequently, the accuracy of the meso-model was validated through the experiments conducted in this study. The influence of the separation angle of the SFRC fracture interface on the bridging effect of the fibers was investigated using the proposed model. Finally, based on the conclusions obtained from the experiments and meso-model, a macro-model of SFRC was proposed to improve the computational efficiency, which was validated considering two different experimental cases.
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