Determination of thickness and stiffener locations for optimization of critical buckling load of stiffened plates

OpenAlex İngilizce

In this paper, buckling optimization of stiffened plates under uniform edge compression is considered. The locations of stiffeners are chosen as design variables and effects over critical buckling loads are observed. For this purpose, two types of conventional stiffened plates which are used in aerospace industry are investigated. The loaded sides of plates are simply supported and in order to reflect the other possible conditions the remaining sides considered free, clamped or simply supported. A finite strip method is used to evaluate buckling loads of plates. Sequential Quadratic Programming algorithm is used to optimize the design variables. Results are presented to show the influence of size optimizations and also stiffener locations. A parametric study is carried out in order to investigate the effect of stiffeners locations on the buckling parameters. The proposed results for the investigated samples can be used to develop an improved design for stiffened plates.   Key words: Buckling analysis, structural optimization, finite strip, stiffened plates.