Numerical Analysis on the Effect of Bar Diameter on Bond Stress-Slip Behavior in ABAQUS

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  • Sana Shaukat University of Engineering & Technology Taxila


Bond-Slip Behavior, ABAQUS, FEM, Ribbed Reinforcing Bar, Bond Strength


This paper presents a numerical analysis on the effect of changing the rebar diameter on bond
stress-slip mechanism in reinforced concrete specimen. The aim is to develop a validated FEM model in
ABAQUS and to observe the effect of different diameters (10mm,12mm, and 16mm) through it. There are
many studies which show contradictory results in case of increasing the bar diameter as according to some
researchers, increase in bar diameter increased the bond strength as it can bear higher forces meanwhile
other suggested that higher the bar diameter, lesser will be the interlocking with the concrete surface. The
results presented in this paper show that with an increase in the bar diameter the bond strength values
decreased. Moreover, 10mm and 12mm rebars showed a pull-out failure meanwhile 16mm rebar showed a
splitting behavior. The Contact Cohesive Behavior (CCB) technique, which replicates the bond stress-slip
behavior in reinforced concrete, is used to study the concrete-rebar interface. Furthermore, the Concrete
Damaged Plasticity Model (CDPM) is used to model the nonlinear behavior of concrete. The method used
to model the ribbed rebar interface doesn’t involve modeling the rebar’s ribs, but another method is utilized
which is to model a plain bar specimen which is connected to the concrete by elements with specific
properties to simulate the bond interface efficiently. The FEA models adequately represent the pull-out test
simulations which are later compared to results of experimental results of pull-out tests from another
research to prove the validity of the numerical simulations.


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Author Biography

Sana Shaukat, University of Engineering & Technology Taxila

Department of Civil Engineering , Pakistan


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How to Cite

Shaukat, S. (2024). Numerical Analysis on the Effect of Bar Diameter on Bond Stress-Slip Behavior in ABAQUS. International Journal of Advanced Natural Sciences and Engineering Researches, 8(5), 101–105. Retrieved from

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