Simulation of the Flexural Response of Ultrahigh Performance Fiber-Reinforced Concrete with Lattice Fracture Model
Simulation of the Flexural Response of Ultrahigh Performance Fiber-Reinforced Concrete with Lattice Fracture Model
复制标题
用晶格断裂模型模拟超高性能纤维混凝土的弯曲响应
DOI：
10.1155/2018/7894192
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发表时间：
2018-05
影响因子：
1.8
通讯作者：
Sun Wei
中科院分区：
文献类型：
--
作者：
Gu Chunping;Wang Qiannan;Sun Wei
基于格构断裂模型，模拟了高性能纤维混凝土（UHPFRC）的弯曲响应。将光纤模拟为分离梁，通过界面梁与基体连接。将模拟结果与实验结果进行了比较。在应变软化后期出现偏差。但在模拟中观察到了应变硬化行为和多裂纹现象。采用晶格断裂模型研究了纤维取向和纤维含量对复合材料断裂行为的影响。随着纤维的排列分布或纤维掺量的增加，UHPFRC的抗弯强度和韧性均有所提高。该模型对超高倍预应力混凝土的材料设计具有一定的指导意义，同时也讨论了该模型的局限性。
The flexural response of ultrahigh performance fiber-reinforced concrete (UHPFRC) was simulated based on the lattice fracture model. Fiber was modelled as separated beam that was connected to the matrix with interface beams. The simulated results were compared with the experimental results. Deviations occurred at the late stage of the strain-softening period. But both the strain-hardening behavior and multicracking phenomenon were observed in the simulation. The effects of fiber orientation and fiber content were studied with the lattice fracture model. The flexural strength and toughness of UHPFRC improved as the fibers were aligned distributed or the fiber content increased. The proposed model has the potential to help with the materials design of UHPFRC, and the limitations of the model were also discussed in the paper.
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DOI：
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发表时间：
1997-04
期刊：
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影响因子：
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作者：
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通讯作者：
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2012
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发表时间：
2010-11
期刊：
Key Engineering Materials
影响因子：
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作者：
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通讯作者：
Z. Qian;E. Schlangen;G. Ye;K. van Breugel
DOI：
10.3929/ethz-a-006015699
发表时间：
2010
期刊：
IOP Conference Series: Materials Science and Engineering
影响因子：
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通讯作者：
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