FRACTURE ANALYSIS OF RECTANGULAR COMPOSITE STEEL TUBES UNDER AXIAL LOADING USING ABAQUS/CAE 6.10-1

Abstract

This research paper focuses on Fracture Analysis of Concrete Filled Rectangular Steel Tube Columns under Uniaxial Loading using ABQCUS/CAE 6.10-1 software was used for proper analytical modeling and also damage analysis of CFST columns were carried out. CFST column structure has high ductility , high load bearing capacity hence it has been widely used in civil engineering field. In this dissertation work,’ Fracture analysis has been carried out rectangular composite steel tubes under axial loading using ABAQUS. Cracked & uncracked modles have been developed using 8-noded 3Dsoild element for concrete & C3H8 element for steel modelling in ABAQUS 6.10-1 . At the outset, developed model is used to validate the results obtained by “ S.D. Bedage , Dr .D.N. Shinde “ of “ Comparative study of concrete filled steel tubes under axial compression” is the International journal of engineering research , vol.3.,issue.3., 2015. Experimental on rectangular axially loaded composite steel tubes were also carried out for different length , width of varying thickness. Ultimate load values obtained were compared with proposed cracked & uncracked fracture model using CTOD method. Further, all the experimental & ABAQUS results compared with ACI code, Euro code, BS code results. The results obtained by Euro codes were found to be inpar with the experimental & proposed ABAQUS values. For the proposed abaqus fracture model & experimental values, the % of error is in the range of 8-15%.