Analysis of GFRP stiffened composite plates with rectangular cutout

Priyadharshani, S. Anitha; Prasad, A. Meher; Sundaravadivelu, R.

doi:10.1016/j.compstruct.2016.10.054

Cited by 25 publications

(9 citation statements)

References 16 publications

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“…Patel and Sharma [8] done parametric study for failure strength and moment distribution and reveals the variation of these with ply layup, fiber orientation, corner radii, materials, loading angle. Composite plates with and without hole are analysed by Priyadharshani et al [9] using FEM and ABAQUS and verified the results with experiments. Ram and Babu [10] investigated flexural behaviour of axisymmetric laminated panels using FEM based higher order shear deformation theory.…”

Section: Introductionmentioning

confidence: 86%

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Non-linear deflection and stress analysis of laminated composite sandwich plate with elliptical cutout under different transverse loadings in hygro-thermal environment

Kumar

Lal

Sutaria

2020

Curved and Layered Structures

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In this paper, non-linear transverse deflection, stress and stress concentration factors (SCF) of isotropic and laminated composite sandwich plate (LCSP) with and without elliptical cutouts subjected to various trans-verse loadings in hygrothermal environment are studied. The basic formulation is based on secant function-based shear deformation theory (SFSDT) with von-Karman nonlinearity. The governing equation of non-linear deflection is derived using C0 finite element method (FEM) through minimum potential energy approach. Normalized trans-verse maximum deflections (NTMD) along with stress concentration factor is determined by using Newton’s Raphson method through Gauss point stress extrapolation. Influence of fiber orientations, load parameters, fiber volume fractions, plate span to thickness ratios, aspect ratios, thickness of core and face, position of core, boundary conditions, environmental conditions and types of transverse loading in MATLAB R2015a environment are examined. The numerical results using present solution methodology are verified with the results available in the literatures.

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Section: Introductionmentioning

confidence: 86%

“…The thermal expansion coefficients using a micromechanical approach can be written as Kumar et al [9]…”

Section: Properties Of Face Sheet Materialsmentioning

confidence: 99%

Non-linear deflection and stress analysis of laminated composite sandwich plate with elliptical cutout under different transverse loadings in hygro-thermal environment

Kumar

Lal

Sutaria

2020

Curved and Layered Structures

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“…Alagusundaramoorthy and Shabeen [ 19 ] studied the strength of stiffened composite plates with square openings under out-of-plane load. Alagusundaramoorthy and Priyadarshini [ 20 ] and Anitha et al [ 21 ] studied the behavior of GFRP-stiffened composite plates under axial and out-of-plane load with very large size cutouts. Sundaravadivelu et al [ 22 ] compared the ultimate strength of steel and GFRP-stiffened composite plate.…”

Section: Introductionmentioning

confidence: 99%

“…It is inferred that the presence of holes/cutouts influences the strength of stiffened composite plates. Studies on-stiffened composite plates with small cutouts/holes [ 17 , 18 ] or very large cutouts cutting across the intermediate stiffeners [ 20 , 21 ] are available. However, studies on cutouts extending between the full widths of the stiffener are very few.…”

Section: Introductionmentioning

confidence: 99%

GFRP Stiffened Plate with Square Cutout under Axial and Out-of-Plane Load

Sirajudeen

Alagusundaramoorthy

2021

Polymers

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The high-strength-to-weight ratio and corrosion resistance properties of glass-fiber-reinforced polymer (GFRP) composites makes them potentially well-suited for application in ship structures, bridges and off-shore oil platforms. These structures are often formed by stiffened plates and are subjected to axial load and out-of-plane load. Cutouts and openings are provided in the plates for access and maintenance. The main objective of this study was to examine the buckling behavior of GFRP-stiffened composite plates with square cutouts under a combination of axial and out-of-plane load up to failure. Four blade-stiffened composite plates without a cutout and four with square cutout were fabricated with stiffeners as a continuous layup of the flange plate using glass fiber and epoxy resin. The initial geometric imperfections were measured, and plate imperfections (Δx), stiffener imperfections (Δsy) and overall imperfections (Δsx) were calculated from the measurements. All fabricated-stiffened composite plates were tested up to failure. The finite element model was developed in ANSYS software and validated with the experimental results. It was observed that GFRP-stiffened composite plates failed by stiffener compression/stiffener tension mode of failure. The presence of out-of-plane loads and cutouts reduced the axial load carrying capacity of the stiffened composite plates.

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“…Pal and Bhattacharyya, 2007, Pal and Ray, 2002and Namdar and Darendeliler, 2017 used progressive failure analysis to evaluate the strength of laminated composite plates under transverse loading and shear loading. Priyadharshani et al, 2017 investigated the ultimate strength of various composite stiffened panels with cutouts by using a finite element method (FEM) and performing experiments. Kong et al, 1998 conducted a series of compression tests on a stiffened composite plate, performed nonlinear finite element analysis, and implemented progressive failure methods to model the compression test results.…”

Section: Introductionmentioning

confidence: 99%

Postbuckling of Marine Stiffened Composite Plates with Initial Geometric Imperfections Using Progressive Failure Analysis

Morshedsolouk

Karimirad

2021

J. Marine. Sci. Appl.

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This work explores the postbuckling behavior of a marine stiffened composite plate in the presence of initial imperfections. The imperfection shapes are derived from buckling mode shapes and their combinations. Thereafter, these imperfection shapes are applied to the model, and nonlinear large deflection finite element and progressive failure analyses are performed in ANSYS 18.2 software. The Hashin failure criterion is employed to model the progressive failure in the stiffened composite plate. The effect of the initial geometric imperfection on the stiffened composite plate is investigated by considering various imperfection patterns and magnitudes. Results show that when the magnitude of the imperfection is 20 mm, the ultimate strength of the stiffened composite plate decreases by 31%. Moreover, global imperfection shapes are found to be fundamental in determining the ultimate strength of stiffened composite plates and their postbuckling. Article Highlights• The effect of initial geometric imperfection mode shapes and magnitude on the ultimate strength of the stiffened composite panels are studied.• The 11 th first buckling mode shapes and a series of combinations of them are assumed as initial geometric imperfections.• The postbuckling and damage are modeled using the progressive damage method and nonlinear finite element method.

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Analysis of GFRP stiffened composite plates with rectangular cutout

Cited by 25 publications

References 16 publications

Non-linear deflection and stress analysis of laminated composite sandwich plate with elliptical cutout under different transverse loadings in hygro-thermal environment

Non-linear deflection and stress analysis of laminated composite sandwich plate with elliptical cutout under different transverse loadings in hygro-thermal environment

GFRP Stiffened Plate with Square Cutout under Axial and Out-of-Plane Load

Postbuckling of Marine Stiffened Composite Plates with Initial Geometric Imperfections Using Progressive Failure Analysis

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