Paper Details

Integrity of R.C.C. solely depends on bond between concrete and rebar. Most of the times, bond-slipproperties are modeled as indirect parameters in numerical analysis. This indirect approach fails to capture true bondslip character especially in sensitive areas like connections. To understand behavior of RCC in connection region it isfelt essential to model true bond slip between concrete and rebar.Direct bond slip approach is usually avoided by researchers due to increased number of elements and difficulties incurvature contact modeling. Multi-linear or exponential nature of bond slip curve makes it even more complicated tomodel for numerical analysis..This work is an attempt to mathematically model experimentally evaluated constitutive bond slip properties of onsitematerial in ABAQUS. Bond slip properties are mathematically modeled in ABAQUS using cohesive properties anddamage evolution option. The geometry of rebar is slightly modified in order to reduce number of elements and toimprove curvature contact parameters. Detailed procedure to obtain multi-linear damage evolution is also described.Experimental and numerical results are compared to establish efficacy of mathematical model.

Mr. Abhay Gujar, Dr. Sachin Pore, Dr. Vipul Prakash, “Modeling in ABAQUS for Experimental Investigation of Multi-linear Bond Slip Properties in Reinforced Concrete”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 6, Issue 3, pp. 155-163, March 2019.