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Journal ArticleDOI

Influence of the web opening shapes on the bending and free vibration responses of castellated steel beams

TL;DR: In this paper , the effect of web opening shapes on displacement, stress values, and free vibration of castellated beams is investigated via the three-dimensional finite element method using ANSYS 22 R1.
Abstract: In recent years, the use of castellated beams has increased significantly across all types of structures. The castellated beam is one of several methods for reducing the weight and cost of steel in construction. In this study, the static and dynamic behavior of castellated beams is investigated via the three-dimensional finite element method. The primary objective of this study is to investigate in detail the effect of web opening shapes on displacement, stress values, and free vibration of castellated beams. The investigation is done using ANSYS 22 R1. In the analysis, 4 different web opening types circle, square, pentagon, and hexagon are used. To generate the models via the finite element method a 10-node tetrahedral type finite element is implemented. This study will employ a linear isotropic homogeneous material with the mechanical properties of steel. As boundary conditions, fixed – fixed, fixed – pinned, and fixed – free are considered. The results for circular, square, pentagon, and hexagon castellated beams made from IPE120, IPE180 and IPE240 profiles are presented in detail. Based on the results, it is seen that the type of web opening has a significant effect on the displacements, von-Mises stresses, maximum shear stress and free vibration values of the considered structures.
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Journal ArticleDOI
TL;DR: In this paper, the structural behavior of castellated steel beams has been investigated and different possible failure modes of these extensively used structural members have been identified and investigated, but no studies are found in the literature on the distortional buckling of casted beams.

107 citations

Journal ArticleDOI
TL;DR: In this paper, a numerical model is developed to predict the behavior of castellated beams with hexagonal and octagonal openings up to failure, taking into account both material and geometric nonlinearities.

102 citations

Journal ArticleDOI
TL;DR: In this article, the vertical shear buckling strength of a web-post in a Castellated Steel Beam (CSB) with hexagonal web openings was investigated using finite element method.

31 citations

Journal ArticleDOI
04 Feb 2019
TL;DR: In this article, the effect of web opening on flexural response of hybrid beams with various shapes of openings was analyzed using ANSYS software, where failure modes, load-deflection behavior of samples and stress concentration with deviation in size, shape and position of openings has been examined closely.
Abstract: This paper present the analytical study of effect of web opening on flexural response of hybrid beams with various shapes of openings. Hybrid beam is used in structures to enhance their bending as well as shear strength. Fabricated beams are used when appropriate hot rolled section is not satisfying the design criteria. The beams are said to be a hybrid beams, when the beams are made up by means of the plates of not the same strength in flanges and web (mostly, fyf > fyw). In the present study, steel of nominal yield stress of 410 MPa and 250 MPa was employed as material for flanges and web, respectively. The analytical investigation has been carried using ANSYS software. The finite element model holds both the geometric as well as material nonlinearity. Failure modes, load–deflection behaviour of samples and stress concentration with deviation in size, shape and position of openings has been examined closely. From the parametric study, it has been observed that averagely there is a 40% increase in strength for the castellated hybrid beams over the homogeneous beams. Amongst the various shapes of opening, the performance of circular and hexagonal openings found to be excellent. The observed failure modes were similar in both hybrid as well as homogeneous beams and the predominant failure mode observed was the failure by the “Vierendeel Mechanism”.

30 citations

Journal ArticleDOI
TL;DR: In this article, a finite element model was developed using ABAQUS/CAE version 6.11 and the Von-misses failure criteria was used to find out the failure load on the beam.

17 citations