The effective length factor of columns in unsymmetrical frames asymmetrically loaded

Slimani, Adel; Ammari, Fatiha; Adman, R.

doi:10.1007/s42107-018-0038-z

Cited by 7 publications

(6 citation statements)

References 21 publications

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“…Next, (Saeed et al, 2021a) made a sensitivity analysis and vibration control of asymmetric nonlinear rotating shaft system utilizing 4-pole AMBs as an actuator and (Saeed et al, 2021b) did an analysis of the rub-impact forces between a controlled nonlinear rotating shaft system and the electromagnet pole legs. Slimani et al (2018) dealt with the concept of the effective length factor of columns representing an important parameter with regard to the elastic buckling analysis. Thumrongvut and Tiwjantuk (2018) presented the experimental results on the strength and axial behavior of rectangular steel tube columns filled with Cellular Lightweight Concrete (CLC) under axial compression.…”

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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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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“…Many other research contributions have been then related to the stability issues of a multitude of loadbearing systems and members can be found in the literature, including plates (Sabouri-Ghomi et al, 2008;Rao and Ra, 2009;Xu et al, 2013;Moradi-Dastjerdi and Malek-Mohammadi, 2017;Riahi et al, 2018;Vu et al, 2019) and nanoplates (Malikan et al, 2018), bracing systems (Rahnavard et al, 2018), tubes (Nouri et al, 2015;Mozafari et al, 2018;Ahmed et al, 2017;Sadath et al, 2017;Sun et al, 2018), frames (Marante et al, 2012;Slimani et al, 2018), pipes (Lolov and Lilkova-Markova, 2005;Melissianos et al, 2017;Moustabchir et al, 2018;Psyrras et al, 2019), or Functionally Graded Material (FGM) structures (Moita et al, 2018;Singh and Harsha, 2019), etc.…”

Section: Stability Analysis According To Eulermentioning

confidence: 99%

“…Razdolsky (2018) focused on elastic stability analysis of battened columns and laced columns with crosswise, fir-shaped and serpentine lattices. Slimani et al (2018) dealt with the concept of the effective length factor of columns representing an important parameter with regard to the elastic buckling analysis. Thumrongvut and Tiwjantuk (2018) analysed strength and axial behavior of cellular lightweight concrete-filled steel rectangular tube columns under axial compression.…”

Section: Literature Reviewmentioning

confidence: 99%

Stability, Stress and Strain Analysis of Very Slender Pinned Thin-Walled Box Columns according to FEM, Euler and TSTh

Murawski¹,

Wahrhaftig²

2021

American Journal of Engineering and Applied Sciences

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In this study, a Finite Element Method (FEM) analysis is presented for the loss of stability in elastic states of very slender pinned without friction box-section thin-walled column axially compressed. From the FEM buckling linear stress analyses are determined the compressing critical forces for 36 cases, presented in tables and as the surface functions in dependence on the slenderness ratio and cross-section. Also are presented graphs obtained from the FEM post-buckling linear stress analysis for the elastic central line, slope, deflection and states of the stresses and strains of the box-section column 202812500 mm made of steel, by the assumption that a maximal deflection equals the half of a side dimension. The obtained from the FEM computing function and surface graphs are compared and then discussed with graphs corresponding to Euler's and Technical Stability Theory (TSTh) results. Finally are compared graphs of the stresses and strains of box-section thin-walled column 202812500 obtained from FEM and TSTh, but under compressing critical force determined according to TSTh.

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“…Next, Saeed et al (2021a) made a sensitivity analysis and vibration control of asymmetric nonlinear rotating shaft system utilizing 4-pole AMBs as an actuator and Saeed et al (2021b) did an analysis of the rub-impact forces between a controlled nonlinear rotating shaft system and the electromagnet pole legs. Slimani et al (2018) dealt with the concept of the effective length factor of columns representing an important parameter with regard to the elastic buckling analysis. Thumrongvut and Tiwjantuk (2018) presented the experimental results on the strength and axial behavior of rectangular steel tube columns filled with Cellular Lightweight Concrete (CLC) under axial compression.…”

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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The effective length factor of columns in unsymmetrical frames asymmetrically loaded

Cited by 7 publications

References 21 publications

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

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

Stability, Stress and Strain Analysis of Very Slender Pinned Thin-Walled Box Columns according to FEM, Euler and TSTh

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

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