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Steel and Composite Structures
  Volume 29, Number 5, December10 2018 , pages 681-688

Influence of stiffener edge on the buckling load of holed composite plates
Mahnaz Zakeri, Ali Mozaffari and Mohamad A. Katirae

    In this paper, buckling load of edge stiffened composite plates is assessed. The effect of stiffener edge size, circular hole, and the fiber orientation angle on buckling behavior of composite plates under uni-axial compressive load is investigated. This paper includes two parts as experimental and numerical studies. L-shape composite plates are manufactured in three different layups. Then the buckling loads are experimentally determined. Subsequently, by using the numerical simulation, the size variation effects of stiffener edge and circular cutout on the plate buckling loads are analyzed in five different layups. The results show that cutout size, stiffener edge height and fiber orientation angle have important effects on buckling load. In addition, there is an optimum height for stiffener edge during different conditions.
Key Words
    composite plate; buckling; finite element analysis; experiment; stiffener edge; cutout
Aerospace Engineering Department, K.N. Toosi University of Technology, Tehran, 16698-3911, Iran.

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