An alternative numerical model for fiber reinforced concrete strength evaluation

Abstract

An alternative numerical model for fiber reinforced concrete (FRC) compressive and bending tensile strength determination is presented in this paper. Fibers are modeled explicitly by using the Extended Finite Element Method (XFEM). An alternative method for modeling the fiber-matrix interaction, without the need for additional subroutine definition, is proposed. The presented numerical model was evaluated by experimental tests and results are in good agreement. The model was developed for Simulia ABAQUS software, but the proposed modeling procedure is generally applicable. In the end, some possible model improvements and suggested applications are included.

The Effect of Voids on Flexural Capacity of Reinforced Concrete Slabs

“…Since many researchers modeled the reinforced concrete slabs using ABAQUS software which considers Explicit Dynamic Analysis (EDA) [18,25,29,32], same software and technique was utilized in this study. There are some behavioral problems during the modeling process of reinforced concrete members such as dynamic effects, non-linear behavior, plastic deformations and contact uncertainty [45,46]. Explicit Dynamic Analysis is a useful tool to overcome these problems as recommended in many studies.…”

“…In this study, upon the reliable results presented in the literature, ABAQUS software with Explicit Dynamic Analysis method was utilized in modeling the slabs and relevant material models, loading conditions and restraints was used. During the dynamic analysis, the loading is performed in very small steps to find the most reliable result [45,46].…”