Buckling behavior of pultruded composite beams with circular cutouts

Aktaş, Mehmet; Balcıoğlu, H. Ersen

doi:10.12989/scs.2014.17.4.359

Cited by 12 publications

(12 citation statements)

References 19 publications

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“…They found that fiber orientation angle has strong influence on plate buckling load. Moreover, numerical and experimental studies, carried out by Aktas and Balcioglu [13] on pultruded composite beams with circular cutouts revealed that buckling load can be enhanced 11 times by changing rowing orientation angle. Tercan and Aktas [14] analyzed rib knitting glass/epoxy laminated plates with cutouts where they focused on the tightness level of knitted fabrics.…”

Section: Introductionmentioning

confidence: 99%

“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Rayhan

2019

JMES

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Current research paper presents a comprehensive study based on Finite Element Method (FEM) to understand the effect of cutout shape and area on the buckling behaviour of E-glass composite plates. Considered plate has a dimension of 150 mm × 75mm × 3mm where loading edges are simple supported (shorter side) and other two edges are free. Major aerospace cutout shapes i.e. circular, square, elliptical (horizontal and vertical) and diamond are studied to understand their effect on plates’ critical buckling load. FE code Ansys is adopted to investigate the case studies. A limited number of experimental tests are also carried out in order to validate the FE code results. Overall, a good agreement between experimental and FE code results are found. From finite element analyses, it is found that for any cutout shape, as the cutout area increases, buckling load decreases significantly. Moreover, increasing the plate thickness by 0.5 mm can raise the buckling load up to 50%. More importantly, fibre orientation angle has most significant effect on the critical buckling load of plates where fibre orientation aligned with loading direction can increase the plates’ critical buckling load from 2.6 to 2.8 times than aligned with 900.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Rayhan

2019

JMES

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“…In order to present buckling response of structural members (columns, beams) under different loading conditions, many numerical and experimental studies were made by researchers [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The present study focuses on the crosssection behavior of steel channel sections subjected to minor-axis bending.…”

Section: Introductionmentioning

confidence: 99%

Compactness Effect on Bending Behavior of Cold Formed Steel Beams

Yaman

Ağcakoca

2020

Period. Polytech. Civil Eng.

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With respect to the determination of the strength of the structural steel members, first the behavior of cross section and then that of the overall member should be considered. In this study, it is aimed to determine the compactness behavior of U-shaped steel sections that exposed to minor-axis bending. Thus, the study questions whether the U-shaped cross section exhibits sufficient dimensions for the collapse mechanism to occur by aiding the moment redistribution in the structural system by supplying sufficient hinge rotation capacity. In order to investigate compactness behavior, three different channel section steel profiles are selected. Four point experimental tests are carried out to validate finite element models of the selected profiles. Upon validated finite element models, parametric studies are performed with finite element analyses. In the parametric study two steel classes, different beam lengths and cross-sectional geometries are taken as parameters. At the end of the study the plate slenderness condition required for plastic design calculated based on Eurocode3 is evaluated with the results of parametric study.

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“…The delaminated area also affected the residual strength [8,9]. It was found that the composite CAI strength with parallel damage side was lower than that of a sample with vertical line damage side [10]. The composite structure under the CAI load showed micro fiber buckling and kinking.…”

Section: Introductionmentioning

confidence: 99%

Characterization of multi‐stitched woven nano composites under compression after low velocity impact (CALVI) load

Bilişik

2017

Polymer Composites

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The purpose of this research was to determine the compression after low velocity impact (CALVI) properties of multi‐stitched nano composite. It was obtained that the CALVI strength of the multi‐stitched nano composite was higher than that of the unstitched composites with or without the nanomaterial. In addition, stitching types (hand stitch or machine stitch) and the particle size of nanomaterial or micro material types were found to be important structural parameters for the multi‐stitched nano composites. The CALVI load applied on the multi‐stitched nano composite resulted in lateral damages close to the impacted indentation region. The failure modes of the damaged zone were local matrix‐fiber debonding and delamination, kinking, and local multiple matrix‐fiber breakages in the in‐plane and out‐of‐plane directions of the composite. Multi‐stitched nano composite showed large damaged areas but the out‐of‐plane layer delamination was confined to relatively small areas. Thus, multi‐stitching and nano particle addition enhanced the CALVI properties of the composite structures. POLYM. COMPOS., 39:3750–3764, 2018. © 2017 Society of Plastics Engineers

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Buckling behavior of pultruded composite beams with circular cutouts

Cited by 12 publications

References 19 publications

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

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

Compactness Effect on Bending Behavior of Cold Formed Steel Beams

Characterization of multi‐stitched woven nano composites under compression after low velocity impact (CALVI) load

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