Finite Element Analysis on Lateral Torsional Buckling Behaviour of I Beam with Web Opening Using Etabs Software

Abstract

Abstract: The lateral-torsional buckling behavior of I-beams with web openings has been a subject of great interest and significance for structural engineers due to the potential impact on their strength and stiffness. A thorough understanding of this behavior is essential for the design of steel structures. Finite Element Analysis (FEA) has emerged as a widely accepted tool for investigating structural responses under various loading conditions. In this study, FEA using the ETABS software, a commonly employed tool for structural analysis and design, was utilized to analyze the lateral-torsional buckling behavior of Ibeams with web openings.The objective of the study was to examine the influence of different web opening characteristics, including shapes, sizes, and locations, on the buckling strength of the beams. To validate the FEA simulations, experimental data available in the literature were utilized. The analysis considered various types of web openings, such as circular, rectangular, and elliptical shapes, with different sizes and positions along the beam span.The findings revealed that the presence of a web opening significantly reduced the strength and stiffness of the I-beam, thereby rendering it more susceptible to buckling failure. Among the studied parameters, the location of the web opening exerted a more pronounced effect on the buckling behavior compared to its size and shape. The FEA simulations demonstrated good agreement with the experimental data available in the literature, which confirmed the accuracy of the ETABS software in predicting the buckling behavior of I-beams with web openings.These results emphasize the importance of carefully considering the presence of web openings when designing I-beams, as they can significantly affect their structural performance. Engineers should pay close attention to the location and size of web openings, implementing appropriate strengthening techniques when necessary to mitigate the adverse effects on buckling behavior. The findings of this study provide valuable insights that can aid in the design and analysis of steel structures incorporating I-beams with web openings, ensuring their overall stability and reliability.