Experimental study on damaged cylindrical shells under compression

Ghazijahani, Tohid Ghanbari; Jiao, Hui; Holloway, DS

doi:10.1016/j.tws.2014.02.029

Cited by 33 publications

(12 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resulting imperfections are generally locally axisymmetric [25]. Different forms and amplitudes of initial imperfections were assumed to find the maximum reduction of the buckling strength in shells with isotropic walls [6,24,25,[29][30][31][32][33][34][35][36][37][38][39]. One assumed the imperfections in the form of regular harmonic pattern in the vertical and horizontal direction, in the form of eigen-modes of the perfect structure [38] and in the form of an irregular pattern on the basis of measurements [8,10,[40][41][42].…”

Section: Literature Reviewmentioning

confidence: 99%

“…One assumed the imperfections in the form of regular harmonic pattern in the vertical and horizontal direction, in the form of eigen-modes of the perfect structure [38] and in the form of an irregular pattern on the basis of measurements [8,10,[40][41][42]. The imperfections were fully axisymmetric, locally axisymmetric or completely local [35,36,41]. The fully axisymmetric imperfections in the form of a sinusoidal function resulted in the strongest reduction of the buckling load [25,28,33,34].…”

Section: Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

Simulation of buckling process of cylindrical metal silos with flat sheets containing bulk solids

Wójcik

Tejchman

2015

Thin-Walled Structures

View full text Add to dashboard Cite

Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Simulation of buckling process of cylindrical metal silos with flat sheets containing bulk solids

Wójcik

Tejchman

2015

Thin-Walled Structures

View full text Add to dashboard Cite

“…Yang et al [4] investigated the buckling behavior of cylindrical shells with non-axisymmetric thickness variation under external pressure. In an experimental investigation, Ghanbari et al [5] studied the instability behavior of dented shells with constant wall thickness under compression. In another study, they studied the instability behavior of these structures under peripheral pressure [6,7].…”

Section: Introductionmentioning

confidence: 99%

05.16: Stability behavior of graded dented cylindrical steel shells under the action of combined external and axial pressure

Pourkhorshidi

Abedi

2017

ce papers

View full text Add to dashboard Cite

Thin-walled cylindrical steel shells such as silos, tanks and other containers are used in various applications of engineering. For economic reasons, large fluid storage steel tanks are made with varying thickness in height. Cylindrical steel shells with stepwise variable wall thickness are the most prevalent structural components in petrochemical and oil industry. However, during the construction procedure and service life, these reservoirs may be exposed to some geometrical imperfections in the form of dents. These shells are subjected to peripheral pressure loading and when a large liquid storage is discharged, an internal suction will be applied to its wall and head, causing external pressure on the wall and axial compression on the head. These structures are prone to fail by buckling under external pressure and axial compression. Previous studies show that the stability behavior of cylindrical shells under pressure load is strongly dependent on the nature and magnitude of the imperfections. Despite many studies on the buckling behavior of thin-walled cylindrical steel shells of constant thickness, so far only a few investigations have been undertaken to examine instability behavior of these structures with thickness variation under the action of combined external pressure and axial compression, considering the dent imperfections. In this study, the effects of vertical and horizontal dents on the buckling and post-buckling behavior of dented graded cylindrical steel shells with two and three layers under the action of a combination of peripheral and axial pressure are investigated. The models are designed in practical dimensions, with some horizontal and vertical dents in different positions. In the present study, non-linear buckling and post-buckling solutions of thin-walled cylindrical steel shell with varying thickness are obtained by using ABAQUS, which is a general-purpose finite element program designed specifically for advanced structural analysis.

show abstract

“…According to the statistics [12], a higher collision risk exists for floating platforms than for fixed platforms with mostly tubular members. However, for large-diameter thin-walled stiffened cylindrical shells with R/t larger than 120, there have only been a few studies, which have produced limited experimental data on their impact response and collapse behaviour in damaged condition [24][25][26][27][28][29][30][31][32][33]. This is partly due to their manufacturing expense and the difficulties involved in testing small-scale models [34].…”

Section: Introductionmentioning

confidence: 99%

Ultimate strength of locally damaged steel stiffened cylinders under axial compression

Cerik

2015

Thin-Walled Structures

View full text Add to dashboard Cite

a b s t r a c tThis paper focuses on the load-carrying behaviour of large diameter thin-walled stiffened cylinders with local damage when subjected to axial compressive loading. The case considered in this study corresponds to the residual strength assessment of columns of floating offshore structures with damage resulting from collisions with supply vessels. Numerical simulations of axial compression tests, which examine the collapse behaviour and the ultimate strength of ring-and orthogonally stiffened cylinders dented by a knife-edged indenter, are presented. The behaviour of eight small-scale ring-stiffened cylinders and four orthogonally stiffened cylinder specimens is analysed. Finite element analyses were performed using the ABAQUS FEA software package, and a close agreement between the experimental test results and the numerical predictions was achieved. To assess the factors influencing the reduction in ultimate strength under axial compression and to clarify the progressive collapse behaviour, further analyses were performed on design examples of ring-and orthogonally stiffened cylinders, considering both intact and damaged conditions.

show abstract

Experimental study on damaged cylindrical shells under compression

Cited by 33 publications

References 14 publications

Simulation of buckling process of cylindrical metal silos with flat sheets containing bulk solids

Simulation of buckling process of cylindrical metal silos with flat sheets containing bulk solids

05.16: Stability behavior of graded dented cylindrical steel shells under the action of combined external and axial pressure

Ultimate strength of locally damaged steel stiffened cylinders under axial compression

Contact Info

Product

Resources

About