On the Resistance Evaluation of Lateral-torsional Buckling of Bisymmetrical I-section Beams Using Finite Element Simulations

Giżejowski, M.; Szczerba, Radosław; Gajewski, Marcin; Stachura, Z.

doi:10.1016/j.proeng.2016.08.100

Cited by 6 publications

(9 citation statements)

References 3 publications

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“…The results obtained from this analysis for the same support conditions showed that the type and value of the geometrical imperfection and the value of the yield stress are among the most important factors. Numerical simulations of LT buckling using 3D brick elements in comparison to shell and beam elements were also presented in Giżejowski et al (2016c). The conclusion is that the application of such a modelling technique for the resistance evaluation of rolled I-sections leads to time-consuming and costly simulations, especially if a rational finite element aspect ratio is maintained for the slender elements, while the accuracy of the buckling strength predictions and the equilibrium path estimations remain practically the same when obtained with the use of the shell finite element modelling technique.…”

Section: Finite Elements Load Transfer and Boundary Conditionsmentioning

confidence: 99%

“…In this section, in the Eurocode prediction of biaxial bending resistance, the values of χ LT,mod The finite element models were previously validated; for many cases, these validations were presented in Giżejowski et al (2016cGiżejowski et al ( , d, 2017a and Gizejowski and Stachura (2017). This paper is a continuation of long-term research and is part of the current research of Papp (2016).…”

Section: Verification Of Eurocode's Resistance Strength Curves For Bementioning

confidence: 99%

“…The shell finite element models formulated by considering large deformation theory with elasto-plasticity constitutive relationships like those presented here may be treated as the first reliable step in the movement towards proper stability problem modelling. The limitations resulting from the shell geometry description are not as conservative as those from beam theory, and the number of elements in the model are reasonable compared with, for example, 3D modelling (Giżejowski et al 2016c). …”

Section: General Conclusion and Final Remarksmentioning

confidence: 99%

“…Refinements of the geometry discretization meshing with shell finite elements are discussed. Numerical simulations are carried out using GMNIA and a nonlinear solver option available in ABAQUS/Standard ( Giżejowski et al (2016cGiżejowski et al ( , 2017b and for in-plane bending and compression. The similarity yields from the same number of elementary resistance ratio components to be considered (two components) and the same nature of the components (one refers to the member buckling phenomenon, and the other refers one to the yielding criterion of the most stressed section).…”

Section: Introductionmentioning

confidence: 99%

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Buckling Resistance Criteria of Prismatic Beams Under Biaxial Moment Gradient

et al. 2018

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Laterally and torsionally unrestrained steel I-section beams are susceptible to torsional deformations between supports; therefore, according to Part 1-1 of Eurocode 3, they need to be designed to resist lateral-torsional buckling. Eurocode's steelwork design criteria require safety checking based on two stability interaction formulae utilizing the so-called equivalent uniform moment factors and the cross-section resistance formula that, in the case of moment gradient, refer to the beam end section. Uncoupling the beam stability resistance criterion and the cross-section resistance criterion may result in a nonuniform safety assessment of I-section beams. Finite element simulations of the beam resistance for different moment gradient ratios are performed. Verification of the buckling resistance is conducted by varying the following parameters: the slenderness ratio, the location of maximum end moments about both axes and the section depth-to-width ratio (i.e., considering rolled I-and H-sections). The variation in the accuracy of the current Eurocode resistance evaluation method is identified, and an approach for a better equalization of the safety predictions is suggested by considering different values of the most important factors influencing the stability performance of steel I-section beams.

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Section: Finite Elements Load Transfer and Boundary Conditionsmentioning

confidence: 99%

Section: Verification Of Eurocode's Resistance Strength Curves For Bementioning

confidence: 99%

Section: General Conclusion and Final Remarksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Buckling Resistance Criteria of Prismatic Beams Under Biaxial Moment Gradient

et al. 2018

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“…Do obliczeń przyjęto sprężysto-plastyczny model stali o wzmocnieniu izotropowym i o małej wartości modułu wzmocnienia, równej E/1000 w celu uzyskania numerycznej stabilności rozwiązania. Szczegó-ły modelowania MES zostały przedstawione przez autorów w [7] i [8].…”

Section: Symulacje Mes Zwichrzenia Belek Walcowanychunclassified

Wpływ Imperfekcji Na Techniczne Zwichrzenie Stalowych Belek Walcowanych I Spawanych

2017

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WPŁYW IMPERFEKCJI NA TECHNICZNE ZWICHRZENIE STALOWYCH BELEK WALCOWANYCH I SPAWANYCHW pracy przedstawiono zagadnienie wpływu imperfekcji materiałowych i geometrycznych na techniczne zwichrzenie stalowych belek walcowanych i spawanych poddanych jednokierunkowemu zginaniu względem osi większej bezwładności przekroju y-y. Obliczenia metodą elementów skończonych przeprowadzono w odniesieniu do belek walcowanych na gorąco, wykonanych z kształtowników szerokostopowych HEB i wąskostopowych IPE oraz belek spawanych o takich samych proporcjach przekroju. Analizowano elementy o wstępnym wygięciu odpowiadającym pierwszej formie zwichrzenia oraz pierwszej formie giętnej wzglę-dem osi mniejszej bezwładności przekroju z-z. Naprężenia resztkowe po walcowaniu i spawaniu elementów modelowano z użyciem wstępnych pól naprężeń. Wykonano geometrycznie i materiałowo nieliniowe analizy GMNIA. Do obliczeń numerycznych wykorzystano program metody elementów skończonych ABAQUS/Standard. Słowa kluczowe: stalowe belki dwuteowe spawane i walcowane, naprężenia rezydualne, imperfekcje geometryczne, zwichrzenie, MES, GMNIA WprowadzenieElementy stalowych konstrukcji realnych obarczone są imperfekcjami geometrycznymi oraz materiałowymi, które są pozostałością procesu wytwarzania tych elementów. W niniejszej pracy autorzy w praktyczny sposób przedstawili wybrane podejścia do modelowania wpływu różnego typu imperfekcji na nośność stalowych belek poddanych jednokierunkowemu zginaniu. W tym celu wykonano analizy GMNIA przy użyciu metody elementów skończonych.

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05.27: Resistance of mono‐axially bent beams of welded I‐sections: FEM verification of Eurocode's buckling curve formulation

2017

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Present Eurocode's approach to design of steel I-section beams is based on the analytical resistance evaluation yielding from the interaction resistance criteria established for beam-columns that cover two design situations: a) the flexural in-plane failure (second order biaxial bending and compression), and b) the flexural-torsional out-of-plane failure (second order spatial bending, warping torsion and compression). The Eurocode's unified resistance ultimate limit state criteria of I-sections are depended upon the technological aspects of steel section production via the buckling curve differentiation for the evaluation of reduction factors for buckling in compression and lateraltorsional buckling in bending about the major axis. This paper attempts to verify the Eurocode's buckling resistance criteria in case of welded I-section in mono-axial bending on the basis of finite element simulations and on the separate inclusion of material and geometrical imperfections. The finite element shell model is utilized and built within the ABAQUS software. The Eurocode's resistance criteria are verified by results of FEM simulations in case of moment gradient loading conditions. Concluding remarks in relation to analytical formulations presented in Eurocode 3 are drawn.

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On the Resistance Evaluation of Lateral-torsional Buckling of Bisymmetrical I-section Beams Using Finite Element Simulations

Cited by 6 publications

References 3 publications

Buckling Resistance Criteria of Prismatic Beams Under Biaxial Moment Gradient

Buckling Resistance Criteria of Prismatic Beams Under Biaxial Moment Gradient

Wpływ Imperfekcji Na Techniczne Zwichrzenie Stalowych Belek Walcowanych I Spawanych

05.27: Resistance of mono‐axially bent beams of welded I‐sections: FEM verification of Eurocode's buckling curve formulation

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