Buckling of axially compressed cylinders with imperfect length

Błachut, J.

doi:10.1016/j.compstruc.2009.11.010

Cited by 29 publications

(8 citation statements)

References 11 publications

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“…Similar trend was observed for cones with imperfection amplitude, A = 0.56 (see Figure 22b). This result is somewhat similar to what was reported for cylinder in (Błachut 2010). In the contrary, for cones with large amplitude i.e., 1.12 ≤ A ≤ 2.8, it is seen that contact of the entire area was not achieved at collapse.…”

Section: Further Numerical Calculationsupporting

confidence: 90%

“…The sinusoidal shape was located along the compressed edge of the cylinder. Numerical results obtained in (Błachut 2010) show rapid drop of buckling strength for small axial imperfection amplitude as compared to the perfect cylinder. Błachut (2015) on the other hand presents experimental and numerical study on the imperfection sensitivity of axially compressed mild steel cylinders having variable length at one end in the form of sinusoidal wave.…”

Section: Introductionmentioning

confidence: 90%

“…The only available information is on imperfect cylinder having uneven geometry, (Błachut 2010;2015;Ifayefunmi and Zulkefli 2019;Ning and Pellegrino 2013;2015;2017). Błachut (2010;2015) and Ifayefunmi and Zulkefli (2019) were devoted to influence of waves on the compressed edge of the cylinder, while, Ning and Pellegrino (2013;2015;2017) on the other hand examine the effect of waves on the cross-sections of the cylinders (i.e., around the cylinder circumference). In (Błachut 2010), the effect of imperfect length having sinusoidal profile towards the buckling behaviour of axially compressed cylinders was investigated numerically.…”

Section: Introductionmentioning

confidence: 99%

“…Błachut (2010;2015) and Ifayefunmi and Zulkefli (2019) were devoted to influence of waves on the compressed edge of the cylinder, while, Ning and Pellegrino (2013;2015;2017) on the other hand examine the effect of waves on the cross-sections of the cylinders (i.e., around the cylinder circumference). In (Błachut 2010), the effect of imperfect length having sinusoidal profile towards the buckling behaviour of axially compressed cylinders was investigated numerically. The sinusoidal shape was located along the compressed edge of the cylinder.…”

Section: Introductionmentioning

confidence: 99%

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Buckling of Axially Compressed Cones with Imperfect Axial Length

Mahidan

Ifayefunmi

2020

Lat. Am. j. solids struct.

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The paper considers the effect of imperfect length on the buckling behavior of axially compressed mild steel truncated cone. Three types of initial geometric imperfections with different number of waves along the compressed edge are analyzed, and they are: (i) sinusoidal waves, (ii) triangular waves, and (iii) square waves. A validation of experimental data from previous study and further numerical calculations are provided in this paper. A good repeatability of experimental data was revealed through the test results with only 0% to 7% of error. Numerical simulations were carried out using ABAQUS FE code. It is shown that the buckling load of the cone is differently affected by the shape and amplitude of the imperfection. Apparently, the buckling loads of analyzed cones are less sensitive when imperfection shape is triangular as compared to other imperfection shapes. Furthermore, the effect of number of waves on buckling load of axially compressed cones was investigated for the above three cases. Results indicate that the influence of number of waves on the load carrying capacity of the cone is less significant.

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Section: Further Numerical Calculationsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Buckling of Axially Compressed Cones with Imperfect Axial Length

Mahidan

Ifayefunmi

2020

Lat. Am. j. solids struct.

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“…One aspect of this problem was studied in Ref. [57]. Cylinders with sinusoidal waviness of axial length were subjected to axial compression by a rigid disk moving vertically.…”

Section: Axial Compressionmentioning

confidence: 99%

Experimental Perspective on the Buckling of Pressure Vessel Components

Błachut

2013

Applied Mechanics Reviews

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This review aims to complement a milestone monograph by Singer et al. (2002, Buckling Experiments-Experimental Methods in Buckling of Thin-Walled Structures, Wiley, New York). Practical aspects of load bearing capacity are discussed under the general umbrella of "buckling." Plastic loads and burst pressures are included in addition to bifurcation and snap-through/collapse. The review concentrates on single and combined static stability of conical shells, cylinders, and their bowed out counterpart (axial compression and/or external pressure). Closed toroidal shells and domed ends onto pressure vessels subjected to internal and/or external pressures are also discussed. Domed ends include: torispheres, toricones, spherical caps, hemispheres, and ellipsoids. Most experiments have been carried in metals (mild steel, stainless steel, aluminum); however, details about hybrids (copper-steel-copper) and shells manufactured from carbon/glass fibers are included in the review. The existing concerns about geometric imperfections, uneven wall thickness, and influence of boundary conditions feature in reviewed research. They are supplemented by topics like imperfections in axial length of cylinders, imperfect load application, or erosion of the wall thickness. The latter topic tends to be more and more relevant due to ageing of vessels. While most experimentation has taken place on laboratory models, a small number of tests on full-scale models are also referenced.

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