Static and Dynamic Analysis of Steel Beams with Web Openings

Static and Dynamic Analysis of Corrugated Beam with Restrained Boundary Conditions

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.

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

Web buckling study of the behaviour and strength of perforated steel beams with different novel web opening shapes

The Vierendeel mechanism is always critical in perforated steel beams with single large web openings, where global shear forces and Vierendeel moments co-exist. Thus far, the main parameters that are known to affect the structural behavior of such beams are the depth of the web opening, the critical opening length of the top tee-section and the web opening area. A comprehensive Finite Element (FE) study of four sizes of perforated steel sections with three different sizes of eleven standard and novel non-standard web opening shapes was undertaken, and their primary structural characteristics presented in detail in order to provide a simple design method for general practice. The different geometric parameters were isolated and studied in order to understand the significance of their effects and in turn advance the knowledge on the performance of perforated steel beams. An elaborate FE model was established, with both material and geometrical non-linearity, allowing load redistribution across the web openings and formation of the Vierendeel mechanism. The reduction of the global shear capacities, due to incorporation of the local Vierendeel moments acting on the top and bottom tee-sections, was obtained directly from the FE analysis. Following that, a comparison of the global shear-moment (V/M) interaction curves of the steel sections with various web opening shapes and sizes was established and empirical generalized V/M interaction curves developed. Moreover, the accurate position of the plastic hinges was determined together with the critical opening length and the Vierendeel parameter. This work has now shown that the shape of the web opening can also significantly affect the structural behavior of perforated beams, as opposed to the equivalent rectangular shape predominately used so far. In addition, the effect of the position of the web opening along the length of the perforated beam was revealed. The importance of the parameters that affect the structural performance of such beams is illustrated. The thorough examination of the computational results has led to useful conclusions and an elliptical form of a web opening is proposed for further study. The outcome of this study is considered as being relevant for practical applications.

/pdf/vierendeel-bending-study-of-perforated-steel-beams-with-xws9xlkxwz.pdf

Static and Dynamic Analysis of Steel Beams with Web Openings

Citations

Static and Dynamic Analysis of Corrugated Beam with Restrained Boundary Conditions

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

References

Web buckling study of the behaviour and strength of perforated steel beams with different novel web opening shapes

Vierendeel Bending Study of Perforated Steel Beams with Various Novel Web Opening Shapes through Nonlinear Finite-Element Analyses

Related Papers (5)

Design of steel and composite beams with web openings

Ultimate load behaviour of steel beams with web openings

Response of reinforced concrete beams with multiple web openings to static load

Static and Dynamic Analysis Web Opening of Steel Beams

Composite Beams with Web Openings: Design