Simulation and Experimental Substantiation of Beam Deflection under Guided End Conditions

Abstract

This paper studies the nonlinear deflection characteristics of a rectangular cross sectional beam with guided support conditions. In this study two different end conditions namely guided – guided and guided – simply supported have been examined. Beams made with two dissimilar materials for instance, aluminum and steel have been considered for this study. Different loading conditions namely point load and the amalgamation of uniformly distributed load and point load have been taken into account in this study. The nonlinear response of a beam under static loading condition is influenced by various parameters like sectional properties of the beam, material, loading and boundary conditions etc. A separate loading fixture was fabricated using steel to apply the load (Point load and uniformly distributed load). The loading fixture was validated by performing an experimental measurement of the deflection under various loading conditions on a simply supported beam. The corresponding theoretical displacement values were calculated using the findings in literature and compared with test results .Both the results were found matching with each other with an average variation of just 10%. Based on this validation lesson, the loading fixture was incorporated in the actual study. Displacement values from the nonlinear static analysis were predicted using Finite Element Method and correlation was made with the experimental values for the actual beam setup. Close correlation among the numerical and physical test results was achieved and the maximum error was 8%.

A short review on the buckling of compressed columns

“…In many engineering systems, beams are common structural elements. A bunch of beam problems have been investigated recentlysee, e.g, (Ecsedi and Gönczi, 2015;Gurumoorthy and Rao, 2019;. When a straight beam is loaded with an axially compressive force, it exhibits minor deformations until it reaches a critical condition known as buckling at the critical load value.…”

Deflection analysis of uniform cross-section hollow rectangular cantilever beam with transverse stiffeners under UDL and concentrated load

“…The design of various steel structures used in different industrial applications is a difficult task for design engineers. This difficulty stems from multiple considerations like applied load, variation in span, different crosssectional members, the material used, use of stiffeners and reinforcement, and applied boundary conditions (Gurumoorthy and Rao 2019). It is very important to study the effect of multiple considerations on a beam's deflection to verify the beam strength according to applied load and application.…”

“…The beam has to be designed so as to withstand the applied load together with any other relevant parameters and considerations specific to the industrial applications. In this regard, different loads such as UDL (Gurumoorthy Gurumoorthy and Rao (2019) investigated experimentally the nonlinear deflection characteristics of a rectangular cross-sectional beam for point load and uniformly distributed load. They found that sectional properties, material, loading, and boundary conditions greatly influence the beam behavior.…”