Nonlinear Finite Element Study on the Circular Concrete Filled Steel Tubular Columns
Yahia Raad Abbas Alani1, V. C. Agarwal2

1Yahia Raad Abbas Alani, Department of Civil Engineering, Sam Higginbottom Institute, Allahabad (U.P), India.
2Dr. V. C. Agarwal, Professor and Head, Department of Civil Engineering, Sam Higginbottom Institute, Shepherd Engineering & Technology, Allahabad (U.P), India.
Manuscript received on 10 November 2013 | Revised Manuscript received on 18 November 2013 | Manuscript Published on 30 November 2013 | PP: 52-55 | Volume-3 Issue-6, November 2013 | Retrieval Number: F1344113613/13©BEIESP
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Abstract: The present study is an attempt to understand the behavior of this type of columns . In this research modeling of 11 circular cross-section model of the columns , these models are taken from pre – publication research , the models been simulated nonlinearly by the finite element method , with the help of the ANSYS software . models has been loaded in a concentric axial compression way, the failure loads were extracted , and has been compared to the results obtained from the experimental data. It been found from the nonlinear modeling by ANSYS program a significant influence of the proportion of the D/t on the axial load capacity of the concrete filled steel tubular , where concluded that the axial load capacity of the columns Increases significantly when lowering the value of the of D/t under the value 47 , but when increasing the value of the D/t over 47 the axial load capacity of the columns increases in small rates. All the specimens been simulated had the length to diameter ratio (L/D) not exceeding the value of 4.5 to act as a short column, and ,therefore, no slenderness effect would be taken in account .
Keywords: Concrete-Filled Steel Tubes Composite Columns, Nonlinear Analysis, Strength, Finite Element Analysis, ANSYS Software.

Scope of the Article: Concrete Structures