Open AccessThe effects of parameter uncertainties on the numerical plastic analysis of non-prismatic reinforced concrete beams
Author(s) -
Sarah Khaleel Ibrahim,
Majid Movahedi Rad,
Muayad Habashneh
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1141/1/012038
Subject(s) - reinforced concrete , beam (structure) , structural engineering , variable (mathematics) , plasticity , calibration , experimental data , finite element method , computer science , engineering , materials science , mathematics , statistics , mathematical analysis , composite material
Structural models and parameters are usually considered deterministic in most studies. However, test results revealed that uncertainties exist in most of these cases due to natural variability or lack of awareness. Therefore, uncertainty in structures is taking huge attention as it has an important role in the structures analysis and the calibration of designing code factors where it enhances the prediction of the models’ behavior. Despite this significance, existing knowledge concerning uncertainties and their parameters seems to suffer from a lack of knowledge especially in unique structures like non-prismatic reinforced concrete beams which are considered a special case in structural engineering for having variable depth across beam section. The present paper aims to examine some uncertainties facing structural engineers and their role in the non-prismatic reinforced concrete beam behavior considering different variables and parameters. Concrete Damage Plasticity (CDP) constitutive model is used to calibrate the numerical model according to the data obtained experimentally. Then different uncertainty parameters were studied by applying several simulations to find out their effect on models’ behavior. The results seem to provide a better understanding of the uncertainties and their effect on the non-prismatic reinforced concrete beams. Lastly, finite element simulations are applied using ABAQUS.