Stability of initially stressed square plates with square openings

Jwalamalini, R.; Sundaravadivelu, R.; Vendhan, C.P.; Ganapathy, C.

doi:10.1016/0951-8339(92)90034-m

Cited by 10 publications

(2 citation statements)

References 4 publications

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“…Narayanan and Chan (1985) presented design charts based on ultimate strength of plates containing circular holes under linearly varying edge displacements. Jwalamalini et al (1992) developed the design charts for the stability of simply supported square plate with opening under in-plane loading as uniform compression and trapezoidal loads. Madasamy and Kalyanaraman (1994) presented the analysis of plated structures with rectangular cutouts and internal supports using the spline finite strip method.…”

Section: Review Of Existing Fruit and Merits Over Themmentioning

confidence: 99%

Ultimate strength of simply supported plate with opening under uniaxial compression

Yu¹,

Lee²

2012

International Journal of Naval Architecture and Ocean Engineeri

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Section: Review Of Existing Fruit and Merits Over Themmentioning

confidence: 99%

Ultimate strength of simply supported plate with opening under uniaxial compression

Yu¹,

Lee²

2012

International Journal of Naval Architecture and Ocean Engineeri

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“…Yettram & Brown [13] studied the stability behaviour of flat square plates with central square perforations. Jwalamalini et al [14], developed the design charts for the stability of simply supported square plate with opening under in-plane loading as uniform compression and trapezoidal loading. Madasamy & Kalyanaraman [15] presented the analysis of plated structures with rectangular cutouts and internal supports using the spline finite strip method.…”

Section: Introductionmentioning

confidence: 99%

Numerical evaluation of the effect of type and shape of perforations on the buckling of thin steel plates by means of the constructal design method

Lorenzini¹,

Helbig²,

Silva³

et al. 2016

IJHT

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Thin steel plates -with or without cutouts -are structural components largely used in several engineering applications as buildings, bridges, ships, airplanes and automobiles. However, if an axial compressive load is imposed to these panels an undesired instability phenomenon can occur: buckling. At a certain load magnitude the limit stress is reached and the plate suffers lateral displacements (out of plane) indicating the buckling occurrence. In plates an elastic buckling or an elastoplastic buckling can occur, depending on dimensional, constructive or operational aspects. Therefore, in the present work, the Constructal Design method was adopted to investigate the influence of the type and shape of the cutout in the plate buckling. To do so, by means the Finite Element Method (FEM), computational models were developed to simulate the elastic (linear) and elasto-plastic (nonlinear) plate buckling. Square and rectangular thin steel plates, simply supported in its four edges, with a centered cutout, were analyzed, being the objective function to maximize the buckling limit stress, avoiding the plate buckling occurrence. The square and rectangular plates have a ratio H/L (ratio between height and length of the plate) of 0.5 and 1.0, respectively. A value of 0.2 for the cutout volume fraction (ratio between the cutout volume and the total plate volume) was adopted for different types of cutout: diamond, longitudinal hexagonal, transversal hexagonal, elliptical, and rectangular. The cutout shape variations were produced by the H0/L0 degree of freedom (which relates the characteristic dimensions of the cutout). The results showed that the cutout shape variation has a fundamental influence in the plate buckling behavior, determining if the buckling is elastic or elasto-plastic, allowing the definition of a buckling stress limit curve for each studied cutout type. In addition, it was observed that the Constructal Design method conduct to the definition of optimal geometries, reaching buckling stress limit improvements around 100%.

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Formulation of reduction rate for ultimate compressive strength of stiffened panel induced by opening

Lee

2014

China Ocean Eng

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Stability of initially stressed square plates with square openings

Cited by 10 publications

References 4 publications

Ultimate strength of simply supported plate with opening under uniaxial compression

Ultimate strength of simply supported plate with opening under uniaxial compression

Numerical evaluation of the effect of type and shape of perforations on the buckling of thin steel plates by means of the constructal design method

Formulation of reduction rate for ultimate compressive strength of stiffened panel induced by opening

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