Buckling of cylindrical panels strengthened with an orthogonal grid of stiffeners

Семенов, Алексей Александрович; Moskalenko, L. P.; Karpov, Vladimir; Sukhoterin, M. V.; Shipping, Inland

doi:10.23968/1999-5571-2020-17-6-117-125

Cited by 4 publications

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“…Many theories and experimental approaches have been studied earlier to determine the buckling instability of composite shells. Alexey Semenov (Semenov, 2021) studied the buckling of the shell panels which were made up of fiberglass and reinforced with stiffeners. Timoshenko type mathematical model was used for the analysis.…”

Section: Introductionmentioning

confidence: 99%

Analytical modeling of cross-ply cylindrical composite submersible shell with elastic buckling using first order shear deformation theory

et al. 2022

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The main objective of this study is to design composite shells i.e. long, short, thin and thick for the different underwater applications. These shells can be a part of pressure hulls, underwater vehicles, pressurized tanks, underwater cables and underwater pipelines etc. This paper presents comprehensive procedures for the mathematical modeling of elastic buckling for submersible composite shells under hydrostatic pressure. First order shear deformation theory (FOSDT) was used for modeling. FOSDT theory was mathematically derived under hydrostatic pressure for composite shells, and it can be used for all types of submersible shells. After the derivation of the theory, mathematical code was formed on MATLAB for this modeling. From the given formulation one can design the shell structure according to his needs on different environment conditions. Different types of composite shells, including moderately thick, thick, long, and short, are investigated for the FOSDT formulation to check the accuracy range. The results were compared with previous studies and finite element analysis FEA. Three types of materials, Carbon/Epoxy, Glass/Epoxy, and Boron/Epoxy, were used with different cross-ply symmetric and unsymmetrical angle configurations. The layups used for the analysis were [0/90/0]s [90/0/90/0]s [02/902]s [90/02/90]s [0/902/0]s [0/0/0/90]s [90/90/90/0]s and [0/90].

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Section: Introductionmentioning

confidence: 99%

Analytical modeling of cross-ply cylindrical composite submersible shell with elastic buckling using first order shear deformation theory

et al. 2022

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“…Earlier in Semenov (2021) and Karpov and Semenov (2020) the authors proposed a refined discrete method for calculating stiffening structures. In these papers, the application is extended to the class of shallow shells of double curvature, stiffened with stiffeners from the outside.…”

Section: Introductionmentioning

confidence: 99%

Buckling of Shallow Shells of Double Curvature Stiffened by Ribs From the Outside

Семенов¹

2022

JSSCM

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The results of a computational experiment on the analysis of the effectiveness of placing stiffeners on the outer side of the shell structure are presented. The calculations were carried out on the basis of a geometrically nonlinear mathematical model that takes into account transverse shears and orthotropy of the material. The calculation algorithm is based on the Ritz method and the method of continuing the solution with respect to the best parameter. To take into account stiffeners, the refined discrete method, proposed by the author earlier, is used. Shallow shells of double curvature are analyzed. The structures are made of steel and are simply supported, the stiffening ribs are arranged orthogonally. The values of critical buckling loads are presented. The effectiveness of the location of the stiffeners on the outer side of the shell structure is shown. It is revealed that the location of the ribs on the outside increases the value of the critical buckling load.

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Influence of Fixation Stiffness to Curved Plates Buckling Due to Compression

Manzhula

Valiulina

Наумов

2021

Advances in Mechanical Engineering

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Buckling of cylindrical panels strengthened with an orthogonal grid of stiffeners

Cited by 4 publications

References 0 publications

Analytical modeling of cross-ply cylindrical composite submersible shell with elastic buckling using first order shear deformation theory

Analytical modeling of cross-ply cylindrical composite submersible shell with elastic buckling using first order shear deformation theory

Buckling of Shallow Shells of Double Curvature Stiffened by Ribs From the Outside

Influence of Fixation Stiffness to Curved Plates Buckling Due to Compression

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