Buckling of imperfect cylinder-cone-cylinder transition under axial compression

Ismail, Mohd Shahrom; Ifayefunmi, O.; Fadzullah, Siti Hajar Sheikh Md

doi:10.1016/j.tws.2019.106250

Cited by 16 publications

(7 citation statements)

References 29 publications

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“…Early experiments showed that the actual buckling load of thin-walled shells has a large knockdown compared with the theoretical buckling load due to its sensitivity to initial imperfections (Arbocz, 1968; Arbocz and Babcock, 1969; Hutchinson, 1965). As a result, the numerical buckling load prediction methods for thin-walled shells considering imperfections have begun to be paid attention and developed, including measured geometric imperfection (MGI) method (Arbocz and Starnes, 2002; Broggi and Schuëller, 2011), linear buckling mode imperfection (LBMI) method (Ifayefunmi and Błachut, 2011; Ismail et al. , 2019; Khot and Venkayya, 1970), single perturbation load approach (SPLA) (Hühne et al.…”

Section: Introductionmentioning

confidence: 99%

“…, 2014; Tian et al. , 2018a), axisymmetric outward bulge (AOB) method (Ifayefunmi and Błachut, 2013; Ismail et al. , 2019), etc.…”

Section: Introductionmentioning

confidence: 99%

“…For the precise prediction of global buckling load and final design optimization, the buckling analysis of combined shells such as conical-cylindrical shells is still meaningful and necessary. Therefore, more and more scholars have begun to pay attention to the conical-cylindrical shell and have carried out a lot of research on the prediction of its buckling load, especially the combined load (Ismail et al ., 2019, 2020a, b).…”

Section: Introductionmentioning

confidence: 99%

“…, 2019; Khot and Venkayya, 1970), single perturbation load approach (SPLA) (Hühne et al. , 2008; Ismail et al. , 2019; Wagner et al.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive step-size numerical vibration correlation technique for buckling prediction of thin-walled shells under axial compression and thermal loads

Huang

Xia

Gao

et al. 2022

MMMS

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PurposeThe purpose of this paper is to propose a numerical prediction method of buckling loads for shell structures under axial compression and thermal loads based on vibration correlation technique (VCT).Design/methodology/approachVCT is a non-destructive test method, and the numerical realization of its experimental process can become a promising buckling load prediction method, namely numerical VCT (NVCT). First, the derivation of the VCT formula for thin-walled structures under combined axial compression and thermal loads is presented. Then, on the basis of typical NVCT, an adaptive step-size NVCT (AS-NVCT) calculation scheme based on an adaptive increment control strategy is proposed. Finally, according to the independence of repeated frequency analysis, a concurrent computing framework of AS-NVCT is established to improve efficiency.FindingsFour analytical examples and one optimization example for imperfect conical-cylindrical shells are carried out. The buckling prediction results for AS-NVCT agree well with the test results, and the efficiency is significantly higher than that of typical numerical buckling methods.Originality/valueThe derivation of the VCT formula for thin-walled shells provides a theoretical basis for NVCT. The adaptive incremental control strategy realizes the adaptive adjustment of the loading step size and the maximum applied load of NVCT with Python script, thus establishing AS-NVCT.

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Section: Introductionmentioning

confidence: 99%

“…, 2014; Tian et al. , 2018a), axisymmetric outward bulge (AOB) method (Ifayefunmi and Błachut, 2013; Ismail et al. , 2019), etc.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…, 2019; Khot and Venkayya, 1970), single perturbation load approach (SPLA) (Hühne et al. , 2008; Ismail et al. , 2019; Wagner et al.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adaptive step-size numerical vibration correlation technique for buckling prediction of thin-walled shells under axial compression and thermal loads

Huang

Xia

Gao

et al. 2022

MMMS

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show abstract

“…Dimple will be produced (mostly at the middle section) as an effect from the lateral load application. Buckling process will initiate at this localized dimple [4,5].…”

Section: Introductionmentioning

confidence: 99%

Instability of Conical Shells with Multiple Dimples under Axial Compression

Ifayefunmi¹,

Mahidan²,

Maslan³

2020

IJRTE

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Abstract: Thin-walled conical shells are primary structures in offshore application. Presence of imperfection can considerably reduce the load carrying capacity of such structures when in use. : two perfect, and the remaining six with MPLA imperfection amplitude, A, of 0.56, 1.12 and 1.68 0.91 to 1.13. This study examines the buckling behavior of axially compressed imperfect steel cones using the multiple perturbation load analysis (MPLA). This is both a numerical and experimental study. Eight conical shell test models were manufactured in pairs and collapsed under axial compression having two equally-spaced dimples on each cones. Experimental test results for all the conical shell models and the accompanying numerical predictions are given in this paper. Repeatability of experimental data was good. The errors within each pair were 3%, 13%, 1% and 0%. In addition, there was a good comparison between experimental and numerical data. The ratio of experimental to numerical buckling loads varies from

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Buckling Analysis of Cylinders Reinforced with Stiffening Rings and Foam. Numerical and Experimental Investigation

Jafari

Fesharaki

2021

Strength Mater

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Buckling of imperfect cylinder-cone-cylinder transition under axial compression

Cited by 16 publications

References 29 publications

Adaptive step-size numerical vibration correlation technique for buckling prediction of thin-walled shells under axial compression and thermal loads

Adaptive step-size numerical vibration correlation technique for buckling prediction of thin-walled shells under axial compression and thermal loads

Instability of Conical Shells with Multiple Dimples under Axial Compression

Buckling Analysis of Cylinders Reinforced with Stiffening Rings and Foam. Numerical and Experimental Investigation

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