Buckling strength of steel plating with elastically restrained edges

Paik, Jeom Kee; Thayamballi, Anil Kumar

doi:10.1016/s0263-8231(00)00009-4

Cited by 53 publications

(32 citation statements)

References 2 publications

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“…The procedure converges to an optimal configuration characterized by a fitness function of 0.91 and a corresponding weight of 19 Table 8 that the analytical results respect the four constraints and that the weight is 29% lower than the weight of the isotropic panel.…”

Section: Resultsmentioning

confidence: 94%

“…The global and local buckling loads are evaluated referring to Eqs. (19) and (32). As previously discussed, the constrained problem is transformed into an unconstrained problem and the fitness function results are composed of two terms.…”

Section: B Optimization Schemementioning

confidence: 96%

“…Second, the stiffener torsional stiffness is accounted for in the solution proposed in [14], whereas it is neglected in Eq. (19).…”

Section: A Global Buckling Loadmentioning

confidence: 99%

“…Only half of the stringer torsional stiffness, indicated by GJ , is used to take into account the presence of adjacent structure [19]. The problem is solved using the method of Ritz and choosing appropriate shape functions.…”

Section: B Skin Local Buckling Loadmentioning

confidence: 99%

“…This approach was applied, for example, by Pevzner et al [18] to study the local buckling load of a composite cylindrical stiffened panel, in which the portion of skin between the stiffeners is assumed to be simply supported along the longitudinal direction and clamped along the circumferential direction. Paik and Thayamballi [19] presented a strategy to take into account the amount of restraint to edge rotations given by the stiffeners. They considered an isotropic stiffened panel that is modeled as a panel elastically restrained along the edges.…”

mentioning

confidence: 99%

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Fast Tool for Buckling Analysis and Optimization of Stiffened Panels

Bisagni

Vescovini

2009

Journal of Aircraft

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This paper presents a fast tool that can be used during the preliminary design of isotropic and composite stiffened panels subjected to axial compression. It consists of two modules, one for the analysis and one for the optimization. The analysis is performed by implementing an analytical formulation to obtain the linearized buckling load and to study the nonlinear postbuckling field. In particular, closed-form solutions are derived for the linearized local and global buckling loads, and a semi-analytical procedure is implemented for the study of the nonlinear local postbuckling field. The optimization is based on genetic algorithms and allows taking into account buckling and postbuckling requirements with reduced computational time. Two examples regarding the minimum weight optimization of an isotropic panel and a composite panel are discussed and verified by means of finite element eigenvalue and nonlinear analyses. The total time required for the analysis and the optimization is of the order of a few minutes, and the difference between the analytical and numerical results is below 9% for the buckling load and below 3% for the postbuckling stiffness. = maximum longitudinal and transverse tensile strain for the composite ply i = penalty function = amplitude of Airy stress function = Poisson's ratio for isotropic material 12 = Poisson's ratio for the composite ply 1 , 2 , 3 , = nondimensional parameters = material density = prebuckling stress buck = buckling stress x; y = Airy stress function

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Section: Resultsmentioning

confidence: 94%

Section: B Optimization Schemementioning

confidence: 96%

“…Second, the stiffener torsional stiffness is accounted for in the solution proposed in [14], whereas it is neglected in Eq. (19).…”

Section: A Global Buckling Loadmentioning

confidence: 99%

Section: B Skin Local Buckling Loadmentioning

confidence: 99%

mentioning

confidence: 99%

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Fast Tool for Buckling Analysis and Optimization of Stiffened Panels

Bisagni

Vescovini

2009

Journal of Aircraft

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Elastic and Inelastic Buckling Strength of Plates Under Complex Circumstances

2018

Ultimate Limit State Analysis and Design of Plated Structures

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Buckling of Plates on Rotationally and Warping Restrained Supports

Piscopo

Scamardella

2014

Lecture Notes in Electrical Engineering

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The paper deals with elastic buckling of plates, having warping and elastically\ud restrained against torsion supports, under uniaxial compression. The minimum\ud energy principle is applied, regarding the isolated plate as part of an infinitely\ud wide stiffened panel, reinforced by longitudinal stiffeners and transverse beams,\ud despite of classical solutions, where two coupled transcendental equations are\ud solved. The displacement field is developed into double sine trigonometric series\ud and the solution convergence, in terms of buckling coefficients, is investigated.\ud Simple design buckling formulas for isolated plate panels, as function of supporting\ud members’ torque and warping rigidity ratios, are derived by curve fitting. Finally,\ud several stiffened panels are analysed and the proposed formulas are compared with\ud the relevant results obtained by some FE eigenvalue buckling analyses, carried out\ud by ANSYS

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Buckling strength of steel plating with elastically restrained edges

Cited by 53 publications

References 2 publications

Fast Tool for Buckling Analysis and Optimization of Stiffened Panels

Fast Tool for Buckling Analysis and Optimization of Stiffened Panels

Elastic and Inelastic Buckling Strength of Plates Under Complex Circumstances

Buckling of Plates on Rotationally and Warping Restrained Supports

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