Parametric Study on Buckling Behavior of Aluminum Alloy Thin-Walled Lipped Channel Beam with Perforations Subjected to Combined Loading

Abstract

The objective of the research presented in this paper is to investigate the buckling behavior of a perforated thin-walled lipped channel beam subjected to combined load. A nonlinear finite element method was used to analyze the buckling behavior of the beam. Experimental tests were made to validate the finite element simulation. Three factors with three levels for each factor were chosen to examine their influence on the buckling behavior of the beam and these factors are: the shape of holes, opening ratio and the spacing ratio of. The finite elements outcome was analyzed by using Taguchi method to identify the best set of three-parameter combinations for optimum critical buckling load. The analysis of variance technique (ANOVA) was implemented to determine the contribution of each parameter on buckling strength. Results showed that the mode of buckling failure of the perforated beam is lateral-torsional buckling and the hexagonal hole shape, =1.7 and = 1.3 were the best combination of parameters that gives the best buckling strength. The results also showed that the shape of holes is the most influential on buckling behavior of the perforated beam for this case of loading.

Progresses and Challenges of Composite Laminates in Thin-Walled Structures: A Systematic Review

“…It has been determined that the size of the critical load that a member may apply increases with diameter. In contrast to previous research, this report does not specify a maximum hole width or number of holes. In addition to his study of the relationship between slenderness ratio and stability, Guo examined the impact of perforations on thin-walled members.…”

“…However, due to its size, this type of structure is vulnerable to buckling, which is made worse by the existence of gaps. The buckling behavior of structural members having perforations is directly influenced by the kind, size, position, and quantity of the perforations . Thin-walled perforated channel beams under compression loads were the subject of the study.…”

“…The buckling behavior of structural members having perforations is directly influenced by the kind, size, position, and quantity of the perforations. 42 Thin-walled perforated channel beams under compression loads were the subject of the study. To examine their effect on the beam’s buckling strength, three parameters, the geometry of the apertures, the opening ratios, and the spacing proportion, were chosen.…”

“… Description of hole spacing and opening ratio in thin-walled structure. 42 Reprinted under the Creative Commons (CC) License (CC BY 4.0). …”