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Numerical Analysis of Rc Shear Critical Beams

Sankar Jegadesh J S and S Jayalekshmi
Department of Civil Engineering, National Institute of Technology, Tiruchirrappalli-15

Abstract—In the present study, a non-linear finite element analysis procedure is adopted with the Softened Membrane Model (SMM) and MacGregor Model that incorporates the material properties and behavioural characteristics of RCC member which can be applied to obtain the shear behaviour. The Finite Element package ANSYS with its 3D Modelling is used as a tool for the analysis of the RCC beams. The 3D concrete Solid 65 finite element is employed in this research to model the nonlinear behaviour of reinforced concrete beams. The analysis is based on the 5 parameter plasticity failure surface due to Willam-Warnke. The load deflection curve analysis is done in ANSYS and the results are compared with the available experimental results taken from the literature. The prediction of the ultimate load by the two different models throws light on the fact that SMM predicts conservative results when compared with the experimental and analytical data. 

Index Terms—RC beams, SMM, macgregor model, ANSYS 3D modelling, load-deflection response

Cite: Sankar Jegadesh J S and S Jayalekshmi, "Numerical Analysis of Rc Shear Critical Beams," International Journal of Structural and Civil Engineering Research, Vol. 3, No. 1, pp. 69-75, February 2014.