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

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...

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Bibliographic Details
Published in:Journal of sustainable cement based materials Vol. 12; no. 2; pp. 207 - 217
Main Authors: Jiang, Jinyang, Luo, Qi, Wang, Fengjuan, Sun, Guowen, Liu, Zhiyong
Format: Journal Article
Language:English
Published: Taylor & Francis 01.02.2023
Subjects:
bridging effect
constitutive model
Euler integral algorithm
fiber reinforced concrete
UMAT
ISSN:2165-0373, 2165-0381
Online Access:Get full text
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Summary: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.
ISSN:2165-0373
2165-0381
DOI:10.1080/21650373.2022.2034549