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Finite Element Modeling Of Partially Composite Castellated Beams
| Communications on Applied Electronics |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 2 - Number 3 |
| Year of Publication: 2015 |
| Authors: R. E. S. Ismail, A.s. Fahmy, N. M. Tawfik |
10.5120/cae-1689
|
R. E. S. Ismail, A.s. Fahmy, N. M. Tawfik . Finite Element Modeling Of Partially Composite Castellated Beams. Communications on Applied Electronics. 2, 3 ( June 2015), 6-22. DOI=10.5120/cae-1689
Abstract
The aim of this paper is to present nonlinear three dimensional finite element models for both simple and continuous partially composite castellated beams under vertical loads using ABAQUS software. The initial geometric imperfection and material nonlinearities were carefully considered in the analysis. At first, Eigenvalue analysis is carried out to obtain the elastic buckling load and the corresponding buckling mode. In order to trace the entire load-deflection curve, the first buckling mode is factored and inserted into the inelastic geometrical nonlinear analysis of the beam as initial imperfection. Different modeling techniques available in ABAQUS are used for modeling of the shear connectors. The reliability of the models is demonstrated by comparisons with experiments and with alternative numerical and analytical analyses for simple and continuous composite beams. In addition, a parametric study is carried out to investigate the effect of change in cross-section geometries, beam length, alignment of stiffeners, concrete strength, steel strength and concrete slab thickness on the buckling and the overall structural behavior of continuous partially composite castellated beams under vertical loads. A total of 96 continuous partially composite castellated beams are studied. Based on the findings of the finite element results, a number of recommendations on the methods of modeling and on the design of continuous steel-concrete composite castellated beams are suggested.
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