Open AccessFEM Simulation of Reinforcing Plain Bar Pull-Out Test from Concrete Sample
Author(s) -
Marcin Dyba
Publication year - 2020
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/960/3/032075
Subject(s) - cracking , bar (unit) , finite element method , structural engineering , steel bar , displacement (psychology) , materials science , deformation (meteorology) , slip (aerodynamics) , computer simulation , geotechnical engineering , composite material , geology , engineering , psychology , oceanography , aerospace engineering , simulation , psychotherapist
The paper presents results of 3D numerical modeling and calculations of a plain bar Ø16 mm concreted in the concrete cube during pull-out test. The prepared geometry reflected real sample dimensions. The mechanical parameters of the materials and assumptions for analysis were adopted based on the results obtained from the experimental tests previously carried out. Numerical calculations included non-linear finite element method (FEM) analysis. As a result of numerical calculations, it was possible to trace the deformation state, stresses and cracking as well as their development along with the change of the bar displacement in the sample. The increase of strains and stresses into the concrete sample occurred until the maximum value of the concrete-steel bond in accordance with the bond model was achieved. After exceeding the top, there was a constant decrease in strains and stresses in concrete with the increase in displacement of the bar (with extension). The first cracks appeared at a slip of approximately 0.1 mm. Cracking of concrete progresses with the increase of the bar displacement in relation to the concrete.