Ultimate strength of cylindrical shells with cutouts

Lee, Sang Eui; Sahin, Selcuk; Rigo, Philippe; Park, Minsue; Paik, Jeom Kee

doi:10.1080/17445302.2016.1271592

Cited by 11 publications

(4 citation statements)

References 31 publications

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“…Ifayefunmi (2016) investigated the buckling behavior of short mild steels with length (L:118.8 mm), diameter (D:100 mm) and three different thickness (t:0.5, 1.0, 2.0 mm) using experimental and FE methods. Umbarkar et al (2013); Feng et al (2016); Rouzegar and Elahi (2016); Lee et al (2017); Rouzegar et al ( 2018) focused on the effect of size, number of hole and location in their research. Shariati and Rokhi (2008) investigated the effect of elliptic holes on thin-walled cylindrical steels using numerical and experimental methods.…”

Section: Introductionmentioning

confidence: 99%

A buckling behavior of elliptic perforated steel CHS columns exposed to axial compression load

Bölükbaş

Mete

2020

Lat. Am. j. solids struct.

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Maintenance work is very important for the continuation of the long service periods planned in engineering structures. Some damage to the steel elements, such as the growth of the holes in the structure, leads to reduced buckling strength and shortened service life. Moreover, the criterion of the hole is uncertain for steel structures. For this reason, it is very important to predict and evaluate the buckling strength of a damaged structure and to take necessary measures. Therefore, in this article, a series of systematic experimental studies are carried out to calculate the buckling strength of elliptical perforated steel columns. Deformation shapes and load-displacement graphs of the test columns are plotted. In addition, the behavior of the column under axial load is analyzed by constructing a finite element model. Numerical simulations are performed with Dynaform finite element package. The effect of the elliptical hole on the column buckling strength by changing the width, height and center is investigated numerically and experimentally. Prepared samples are subjected to axial loading test and compared with numerical results. In light of the data obtained from the numerical results, the effect of the width, height and center of a single elliptical hole on the buckling strength of the column is clearly demonstrated.

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Section: Introductionmentioning

confidence: 99%

A buckling behavior of elliptic perforated steel CHS columns exposed to axial compression load

Bölükbaş

Mete

2020

Lat. Am. j. solids struct.

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“…Rao Yarrapragada et al (2012) used the Windenburg equation, which was developed for homogeneous materials, to predict the critical buckling pressure of composite shells with equivalent stiffness moduli, and compared the results with NLFEM. It is not surprising that a lot of studies on cylindrical shells made of steel or composite materials have also been made in the literature (Jones, 2010;Bai et al, 2013a;Bai et al, 2013b;Smith et al, 2013;Bai et al, 2014;Guz et al, 2014;Abdel-Nasser et al, 2015;Lee et al, 2016;Xiong et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

An empirical formula for predicting the collapse strength of composite cylindrical-shell structures under external pressure loads

Cho

Paik

2019

Ocean Engineering

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This paper derives an empirical formula for predicting the collapse strength of composite cylindrical-shell structures under external hydrostatic pressure loads as a function of geometric dimensions and layered angles, where the effects of initial manufacturing imperfections are implicitly taken into account. A series of experiments are undertaken on [ /90]FW filament-wound-type composite cylindrical-shell models subjected to collapse pressure loads. A total of 20 composite cylindrical-shell models are tested to derive the empirical formula, which is validated by comparison with experimental data, existing design formulas of ASME 2007 and NASA SP-8700, and solutions of the nonlinear finite element method. It is concluded that the proposed formula accurately predicts the collapse pressure loads of filament-wound composite cylinders and will thus aid the safety design of composite cylindrical shell-structures under external pressure loads.

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“…Such capabilities are provided by software systems such as NAS-TRAN, ANSYS, ABAQUS, and others. Since the late 60's of the last century, the application of FEM for the problems of studying the SSB and the load-bearing capacity of shells with holes has become increasingly common [9][10][11][12][13][14][15][16]. Nevertheless, it is necessary to state the fact that researches by using the FEM, in particular, stress concentration, critical loads and ultimate states, in which the deformation nonlinearity of the shells with holes is taken into account, is not enough.…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Deformation Nonlinearity on Stress Concentration in Cylindrical Shells with Holes under Torsion

Kolodiazhnyi

Медникова

2019

MSF

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Circular cylindrical shells, application of which is widely widespread in a space-rocket technique and aircraft building, often have cutouts on the surface on structural and technological terms. The feature of the stress-strain state, when a circular hole is introduced into the shell, is the appearance of stress concentration zones, in which stress can be increased in many times. The linear static analysis often used for determination of maximal stresses in such elements of constructions does not reflect character of stresses change with increasing of the external loading. The results of Finite-Elements nonlinear static analysis of the stresses concentration caused by the hole presence depending on the size of torsion moment increasing from zero to the maximal values are presented in this article. The parametric analysis for the wide range of shells lengths and hole radii is carried out, at which different combinations the dependences of stresses concentration factor (SCF) on the value of torsion moment on all range of loading are defined. It is shown that the stresses fields, unlike the linear model of deformation, transform in the loading process. SCF obtained by taking into account the geometrical nonlinearity of deformation depends not only on the geometrical parameters of the considered sample, but also on the level of loading. There are two types of behavior of SCF dependence on the loading level and on the structure parameters. The SCF increases continuously in the first half of loading range. In the second half in case of the small holes the monotonous growth proceeds to the maximal values, and for the large holes ‒ SCF can fall at load increasing, and sometimes has the repeated areas of intensive growth in the pre-ultimate state.

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Ultimate strength of cylindrical shells with cutouts

Cited by 11 publications

References 31 publications

A buckling behavior of elliptic perforated steel CHS columns exposed to axial compression load

A buckling behavior of elliptic perforated steel CHS columns exposed to axial compression load

An empirical formula for predicting the collapse strength of composite cylindrical-shell structures under external pressure loads

The Influence of the Deformation Nonlinearity on Stress Concentration in Cylindrical Shells with Holes under Torsion

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