Buckling analysis of rectangular composite plates with rectangular cutout subjected to linearly varying in-plane loading using fem

Abstract

A numerical study is carried out using finite element method, to examine the effects of square and rectangular cutout on the buckling behavior of a sixteen ply quasi-isotropic graphite/epoxy symmetrically laminated rectangular composite plate [0 • /+45 • /-45 • /90 • ] 2s, subjected to various linearly varying in-plane compressive loads. Further, this paper addresses the effects of size of square/rectangular cutout, orientation of square/rectangular cutout, plate aspect ratio(a/b), plate length/thickness ratio(a/t), boundary conditions on the buckling bahaviour of symmetrically laminated rectangular composite plates subjected to various linearly varying in-plane compressive loading. It is observed that the various linearly varying in-plane loads and boundary conditions have a substantial influence on buckling strength of rectangular composite plate with square/rectangular cutout.

Static, Free Vibration and Buckling Analysis of Composite Panels; A Review

“…It is clearly observed that the composite reinforced by S-glass fiber acts as a brittle material, and when subjected to uniaxial compression loads it does not go further in elongation. Lakshmi Narayana et al [59] examined the influence on the bending action of a 16 ply symmetrically laminated composite rectangular symmetric graphite/epoxy rectangular composite plate [0…”

A Parametric study on the effect of elliptical cutouts for buckling behavior of composite plates under non-uniform edge loads

“…Muc et al (2018b) described the stability loss in composite structure focusing on buckling and post-buckling behaviour with cutout and reinforcement. Narayana et al (2014); Rajanna et al (2017Rajanna et al ( , 2018; Abolghasemi et al (2019) studied the effect of linearly varying edge loads on the stability of composite plates with a circular or square cutout. Aydin Komur et al (2008) and Chandra et al (2020aChandra et al ( , 2020bChandra et al ( , 2021 analysed the buckling behaviour of composite laminate under non-uniform varying in-plane compressive loads with circular cutouts.…”

A comprehensive study on the buckling behaviour of woven composite plates with major aerospace cutouts under uniaxial loading

“…A grooved shaped cutout panels are investigated for steel plates by Mohtaram et al [23] found that with identical values of the groove angle  , the buckling load decreases with increasing the length of the groove, and this effect is most prominent when  = 90 0 . A numerical investigation was carried out by Narayana et al [24] to study the effect of plate aspect ratio and location of the square/rectangular cutout on the buckling behavior of a sixteen ply quasi-isotropic graphite/epoxy symmetrically laminated rectangular composite plate subjected to various inplane compressive loading. Their studies revealed that cutout orientation has effect on buckling when it is located at the center.…”

“…From the above literature review, it was found that even though theoretical formulations of solving critical buckling loads of structures are successful [4,5] but plates with cutouts have got limitations [1][2][3]. Based on Finite Element formulations and experimental studies, plates with different cutout shapes [6][7][8][9][10][11][12][13][19][20][21][22][23][24][25][26][27][28][29] and reinforcements [15][16][17][18] were studied but comprehensive studies based on all major cutouts are notably limited. This paper addresses the effect of all major cutout shapes (circular, square, horizontal ellipse, vertical ellipse and diamond) and sizes, plate aspect ratio, ply thickness and fiber orientation angle on the buckling behavior of E-glass composite plate.…”