Uniaxial tensile constitutive model of fiber reinforced concrete considering bridging effect and its numerical algorithm

被引:3
作者
Jiang, Jinyang [1 ,2 ]
Luo, Qi [1 ,2 ]
Wang, Fengjuan [1 ,2 ]
Sun, Guowen [3 ]
Liu, Zhiyong [1 ,2 ]
机构
[1] Southeast Univ, Sch Mat Sci & Engn, Nanjing, Peoples R China
[2] Southeast Univ, Jiangsu Key Lab Construct Mat, Nanjing, Peoples R China
[3] Shijiazhuang Tiedao Univ, Sch Mat Sci & Engn, Shijiazhuang, Hebei, Peoples R China
基金
中国国家自然科学基金;
关键词
constitutive model; fiber reinforced concrete; bridging effect; Euler integral algorithm; UMAT; PULL-OUT; CEMENTITIOUS COMPOSITES; MULTIPLE CRACKING; BEHAVIOR; INTEGRATION;
D O I
10.1080/21650373.2022.2034549
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper proposes a constitutive model of fiber reinforced concrete (FRC) composites under uniaxial tensile load considering fiber bridging effect, and the corresponding numerical algorithm is given. Due to the linear simplification on plain concrete's constitutive model, and adoption of the explicit modified Euler integral algorithm, the solving process of this numerical model is greatly simplified. In addition, the numerical implementation algorithm of the model in ABAQUS through user-defined subroutine (UMAT) is given. The finite element calculation results and the experimental results under uniaxial tensile load are in good agreement, which proves that the model has good accuracy in predicting the peak stress of FRC under different fiber content. The simplification method proposed and the solution algorithm induced in this paper can ensure the stability and accuracy of the results, which provide a feasible development direction for FRC calculation in large-scale structures.
引用
收藏
页码:207 / 217
页数:11
相关论文
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