04.18: Determination of the plastic limit load for a cylindrical shell under general loading conditions using FEA

Słowiński, K.; Piekarczyk, Marek

doi:10.1002/cepa.138

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…The extension elements were mapped with S4R elements of a uniform thickness. A geometrically and materially nonlinear numerical analysis was carried out by using the Abaqus/Standard module and the Riks method [ 40 ].…”

Section: Specimens Tests and Modelsmentioning

confidence: 99%

Assessment of the Bending Moment Capacity of Naturally Corroded Box-Section Beams

Fiołek

Jakubowski

2021

Materials

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The steel constructions of mine shaft steelwork are particularly exposed to aggressive environments, which cause large, nonuniform corrosion loss throughout the steel members. A correct assessment of corrosion loss and load-carrying capacity of shaft steelwork is crucial for its maintenance and safe operation. In this article, we present the results of laboratory, numerical, and analytical investigations conducted on naturally corroded steel guides disassembled from shaft steelwork. The steel guides considered had a closed profile formed by welding two hot-rolled channel sections. Laboratory bending tests were carried out on beams with various levels of corrosion loss, corresponding to compact, non-compact, and slender cross sections. Multiple detailed measurements of the thicknesses of naturally corroded walls were used in order to reproduce their nonuniform geometry in finite element (FE) models. The results of numerical simulations of five bending tests showed good agreement with laboratory measurements and replicated the observed failure modes, therefore confirming the applicability of this modeling approach for assessing the moment capacity of highly corroded steel beams when the deteriorated geometry is known. For the purpose of generalization, a series of derived models reflecting the natural corrosion pattern was then developed, and moment capacity statistics were collected through multiple simulations. They showed that the mean moment capacity is determined by the mean wall thickness. However, the minimum moment capacity is strongly affected by corrosion loss variation, particularly for the highly corroded beams. A simplified, analytical modeling approach was also examined, providing fairly good assessments of the mean; however, the minimum moment capacity could not be estimated. This study contributes to the body of knowledge on the mechanical behavior of highly corroded hot-rolled box-section beams.

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Section: Specimens Tests and Modelsmentioning

confidence: 99%

Assessment of the Bending Moment Capacity of Naturally Corroded Box-Section Beams

Fiołek

Jakubowski

2021

Materials

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“…The five beams with different cross-sections, lengths, supports and loadings were analyzed. Słowiński and Piekarczyk (2017) dealt with a safe and economic design of steel cylindrical shells according to European Standard EN 1993-1-6 often requiring a nonlinear analysis. Abdulazeez et al (2018) presented a numerical study on the behavior of Hollow-Core Fiber Reinforced Polymer-Concrete-Steel (HC-FCS) columns under combined axial compression and lateral loadings.…”

Section: Review Of the Literaturementioning

confidence: 99%

Experimental Comparison of the Known Hypotheses of the Lateral Buckling for Semi-Slender Pinned Columns

Murawski¹

2021

International Journal of Structural Glass and Advanced Material

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The paper presents the comparison of experimental results obtained from tests on semi-slender columns with pinned ends made of steel R35 to simplifications and hypotheses of loss of stability by lateral buckling in elastic-plastic states of columns axially compressed by force. The Tetmajer-Jasiński's and Johnson-Ostenfeld's simplifications, as well as the hypotheses given by Engesser and Kármán and Shanley, Ylinen, Březina, Pearson and Bleich and Vol'mir and the author's one approximated, are analyzed. The graphs of surface functions of critical compressive stress cr(A, L*t) depending on a cross-section area and length times thickness product are presented as the theoretical examples of thin-walled cylindrical and square columns made of steel R35. In order to compare the experimental results with other simplifications and hypotheses are shown in the adequate ranges for elastic-plastic states as the graphs of the functions of critical compressive stress depending on slenderness ratio cr().

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“…The five beams with different cross-sections, lengths, supports and loadings were analysed. Słowiński and Piekarczyk (2017) dealt with a safe and economic design of steel cylindrical shells according to European Standard EN 1993-1-6 often requiring a nonlinear analysis. The plastic collapse load resulting from a materially nonlinear analysis was to be determined then in many cases.…”

Section: Introductionmentioning

confidence: 99%

Technical Buckling, Stress and Strain Simplified Analysis of Semi-Slender Thin-Walled Cylindrical Pinned Column

Murawski¹

2021

International Journal of Structural Glass and Advanced Material

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The stability of load-bearing members is a challenging issue for designers. The avoidance of possible stability troubles is a mandatory step of the overall design process. The paper presents and discusses two simplified methods based on the Technical Stability Theory (TSTh) of loss of stability of lateral buckling in elastic-plastic states of semi-slender columns axially compressed by force. It is assumed that in the critical elastic-plastic transverse cross-section there are the elastic and plastic parts of the area, keeping strength. To simplify the calculations, there are assumed the simplifications that the whole moment of inertia of a cross-section area is taken into account Jz = Jz all , the plastic module equals compress module Epl = Ec taken from experimental researches and as the next bigger simplification, the plastic module equals compressing module Epl = 0. The graphs of functions of the curved axes, their slopes, deflections of the columns, stresses and strains in thin-walled columns and compressing critical stresses depending on the cross-section areas and slenderness ratios are presented as the theoretical examples of thin-walled cylindrical columns and compared to results obtained from experiments with columns made of steel St35.

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04.18: Determination of the plastic limit load for a cylindrical shell under general loading conditions using FEA

Abstract: This article is not available for publication.

Cited by 4 publications

References 5 publications

Assessment of the Bending Moment Capacity of Naturally Corroded Box-Section Beams

Assessment of the Bending Moment Capacity of Naturally Corroded Box-Section Beams

Experimental Comparison of the Known Hypotheses of the Lateral Buckling for Semi-Slender Pinned Columns

Technical Buckling, Stress and Strain Simplified Analysis of Semi-Slender Thin-Walled Cylindrical Pinned Column

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