PSI - Issue 54

Ahmed Selim et al. / Procedia Structural Integrity 54 (2024) 601–608 Selim et al./ Structural Integrity Procedia 00 (2019) 000 – 000

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(epoxy and FRP) would correspond to simulating different interaction behaviors which will significantly increase the computation time.

Fig. 1. Geometry and FRP detailing of 1 st prism model

Fig. 2. Geometry and FRP detailing of 2 nd prism model

2.2. Materials definition The concrete was defined using the concrete damage plasticity model. Standard values defined by ABAQUS manual were used to input the four plasticity parameters. Accordingly, 0.1 was inputted for eccentricity, 1.16 was inputted for the ratio of initial equibiaxial compressive yield stress to initial uniaxial compressive yield stress, 0.67 was inputted for K c , and 0.001 was inputted for the viscosity parameter. The concrete compression and tension parameters were adopted from AlKady (2021). The compressive strength was 30 MPa and the modulus of elasticity was 20 GPa. For the dilation angle, it was observed from past literature ( Pavlović et al., (2019), Ali et al., (2013), Li et al., (2017), Kyaure et al., (2021)) that it generally ranges between 30 o and 40 o . Thus, an average value of 35 o was selected for the prisms. CFRP was modeled as a linear elastic isotropic material. The use of CFRP is not essential, as