Experiments on corrugated thin cylindrical shells under uniform external pressure

Ghazijahani, Tohid Ghanbari; Dizaji, Hamed Sadighi; Nozohor, Javad; Zirakian, Tadeh

doi:10.1016/j.oceaneng.2015.06.057

Cited by 32 publications

(5 citation statements)

References 19 publications

(13 reference statements)

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“…Unlike this, though, an effort was made [6][7][8] to set forth the positive effects of irregularities provided that they are designed in a professional ways, e.g. corrugations and/or stiffeners in thin-walled structures, all of which implied the strengthening effect of some particular imperfections on the body of such structures.…”

Section: Geometric Non-uniformities and Recent Advancesmentioning

confidence: 99%

Steel Structures: Brilliant Ideas, Advances and Discussions

Ghazijahani¹

2015

J Steel Struct Constr

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Section: Geometric Non-uniformities and Recent Advancesmentioning

confidence: 99%

Steel Structures: Brilliant Ideas, Advances and Discussions

Ghazijahani¹

2015

J Steel Struct Constr

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“…During the past 10 years, Ghanbari Ghazijahani and his colleagues conducted many experiments on cylindrical tanks. Most of their experiments focused on the imbalance created on shells and the buckling effects on these shells 19‐23 . Ghanbari Ghazijahani and his colleagues also examined the effects of localized dents on thin‐walled structures 24 .…”

Section: Introductionmentioning

confidence: 99%

“…Most of their experiments focused on the imbalance created on shells and the buckling effects on these shells. [19][20][21][22][23] Ghanbari Ghazijahani and his colleagues also examined the effects of localized dents on thin-walled structures. 24 Moreover, the thermal buckling of cylindrical shells under uniform heating and temperature gradients through the thickness was studied in the past, [25][26][27][28][29] but the thermal loading generated by a fire is more complicated than these patterns.…”

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confidence: 99%

Post‐fire behavior of CFRP retrofitted thin‐walled steel tanks

Maali

Kılıç

2020

Fire and Materials

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Thin-walled shell structures are characterized by a lightweight structural form with high strength. This structure has many applications in various engineering fields and is considered to be a basic tool in the modern industry. This study investigates the effect of CFRP on tanks after post-fire in order to examine the buckling and postbuckling of the cylindrical tanks. Herein, post-fire was introduced at different temperatures (150 C-600 C). Ten laboratory specimens in two groups with verified temperatures, under external pressure, are examined. The models were designed to demonstrate how repairing steel tanks, which are damaged by fire, by using carbonfiber-reinforced polymer can recover lost capacity. The results of testing under different theories and codes were compared. This study shows that the initial buckling load of the temperature group increased by 30.82% to 57.09% compared to the temperature without-CFRP group. The overall buckling load of the temperature group increased by 37.01% to 67.74% compared to the temperature without-CFRP group. The collapse load of the temperature group increased by 27.04% to 52.64% compared to the temperature without-CFRP group. And using carbon-fiber-reinforced polymer on models, which are damaged by fire, can be an improvement behavior for the buckling and post-buckling specimen tests.

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“…Yang et al [27] established governing equations and proposed a numerical approximation of the nonlinear deformation problem of longitudinally corrugated cylindrical shells under a uniformly distributed load. Ghazijahani et al [28] presented experimental results on the buckling behavior of corrugated cylindrical shells and cylindrical shells stiffened by corrugated rings under a uniform peripheral pressure. Ahmed [29] developed a simply analytical approach for investigating the linear buckling behavior of a cosine corrugated elliptic cylindrical shell subjected to external pressure and surrounded by an elastic foundation.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Buckling Behavior of Spiral Corrugated Sandwich FGM Cylindrical Shells Surrounded by an Elastic Medium

et al. 2020

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This paper presents a semi-analytical approach for investigating the nonlinear buckling and postbuckling of spiral corrugated sandwich functionally graded (FGM) cylindrical shells under external pressure and surrounded by a two-parameter elastic foundation based on Donnell shell theory. The improved homogenization theory for the spiral corrugated FGM structure is applied and the geometrical nonlinearity in a von Karman sense is taken into account. The nonlinear equilibrium equation system can be solved by using the Galerkin method with the three-term solution form of deflection. An explicit solution form for the nonlinear buckling behavior of shells is obtained. The critical buckling pressure and the postbuckling strength of shells are numerically investigated. Additionally, the effects of spiral corrugation in enhancing the nonlinear buckling behavior of spiral corrugated sandwich FGM cylindrical shells are validated and discussed.

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Experiments on corrugated thin cylindrical shells under uniform external pressure

Cited by 32 publications

References 19 publications

Steel Structures: Brilliant Ideas, Advances and Discussions

Steel Structures: Brilliant Ideas, Advances and Discussions

Post‐fire behavior of CFRP retrofitted thin‐walled steel tanks

Nonlinear Buckling Behavior of Spiral Corrugated Sandwich FGM Cylindrical Shells Surrounded by an Elastic Medium

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