Structural behavior of non-prismatic mono-symmetric beam

International Conference on Advances in Manufacturing, Materials and Energy Engineering 2018

材料科学;能源学

Nagaraju, Nandini B.^1 ; Gowda, Punya D.^1 ; Aishwarya, S.^1 ; Rohit, Benjamin^1

Department of Aerospace Engineering, RVCE, Bengaluru, Karnataka, India^1

关键词: Aerospace structure;    Channel beams;    Dynamic parameters;    Lateral-torsional buckling;    Non-linear parameters;    Structural behaviors;    Structural efficiencies;    Tapered beam;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/376/1/012111/pdf
DOI  :  10.1088/1757-899X/376/1/012111

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper attempts to understand the structural behavior of non prismatic channel beams subjected to bending through finite element(FE) analysis. The present study aims at shedding some light on how tapered channel beams behave by studying the effect of taper ratio on structural behavior. As a weight reduction is always desired in aerospace structures beams are tapered in order to obtain highest structural efficiency. FE analysis has been performed to study the effect of taper ratio on linear deflection, lateral torsional buckling, non-linear parameters and dynamic parameters. Taper ratio tends to affect the mechanics of tapered beams innocuously and adversely. Consequently it becomes important to understand and document the mechanics of channel tapered beams. Channel beams generally have low torsional rigidity due to the off-shear loading. The effect of loading type and location of applied load have been studied for flange taper, web taper and symmetric taper for different conditions. Among these, as the taper ratio is increased, the torsional angular deflection increases but begins to decrease when the beam is web tapered and symmetrically tapered for a mid web loaded beam. But when loaded through the shear center, an increase in the torsional angular deflection can be observed with increase in taper ratio. This indicates that a flange taper could cause an increase in torsional angular deflection with an increase in taper ratio.