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Analiza nośności mimośrodowo obciążonego stalowego słupa o przekroju ceowym
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Abstrakty
The work includes the results of numerical, analytical-numerical and experimental study into the influence of load eccentricities with regard to major axis on post-buckling behaviour and load-carrying capacity of thin-walled cold-formed steel lipped channel section columns. The study was solved by using the finite element method (code Ansys) with taking into consideration a full material characteristics in logarithmic strain system and geometric nonlinearities. The analytical-numerical solution was based on Koiter’s theory with an application of finite difference method (FDM). Some chosen results of numerical simulations have been compared to experimental results. The deformations of columns were registered by means of Digital Image Correlation Aramis System (DICAS) to observe the maps and the magnitude of displacements for adequate point of a load. The analyses showed that the decrease in maximum load in a dependency on the eccentricity value can be even 3 times minor in a comparison to the load-carrying capacity of axially loaded column.
Praca dotyczy analiz numerycznych, numeryczno-analitycznych i eksperymentalnych wpływu obciążeń mimośrodowych względem osi centralnej Imax na pokrytyczne zachowanie i nośność cienkościennych zimno formowanych stalowych słupów o przekroju otwartym z żebrami końcowymi w pasach. Problem został rozwiązany stosując metodę elementów skończonych (program Ansys) z uwzględnieniem pełnych charakterystyk materiałowych w układnie logarytmicznym oraz nieliniowości geometrycznych. Rozwiązanie analityczno-numeryczne zostało oparte o teorię Koitera z zastosowaniem metody różnic skończonych. Wybrane wyniki symulacji zostały porównane z wynikami empirycznymi. Deformacje słupów podczas wykonywania badań doświadczalnych były rejestrowane optyczną metodą cyfrowej korelacji obrazów za pomocą systemu Aramis w celu określenia map deformacji i wielkości przemieszczeń punktów dla określonego obciążenia. Wyniki analizy pokazały, iż spadek w maksymalnych siłach w zależności od przesunięcia siły ściskającej względem osi centralnej słupa, może być nawet trzykrotny w odniesieniu do nośności ceowników ściskanych osiowo.
Czasopismo
Rocznik
Tom
Strony
301--316
Opis fizyczny
Bibliogr. 24 poz., il., tab.
Twórcy
autor
- Lodz University of Technology, Faculty of Mechanical Engineering, Lodz, Poland
autor
- Lodz University of Technology, Faculty of Mechanical Engineering, Lodz, Poland
autor
- Lodz University of Technology, Faculty of Mechanical Engineering, Lodz, Poland
autor
- Department of Steel Structures and Structural Mechanics, Politehnica University of Timisoara, Romania
autor
- Lodz University of Technology, Faculty of Mechanical Engineering, Lodz, Poland (student)
Bibliografia
- [1] Ansys, User’s Guide, 18.2. Houston, TX, USA, 2018.
- [2] Ł. Borkowski, et. al., “Ultimate and post-ultimate behaviour of thin-walled cold-formed steel open-section members under eccentric compression. Part II: Experimental study”, Thin-Walled Structures, vol. 171, art. no. 108802, 2022, doi: 10.1016/j.tws.2021.108802.
- [3] C. Buchanan, et al., “Cold-formed stainless steel CHS beam-columns - Testing, simulation and design”, Engineering Structures, vol. 213, art. no. 110270, 2020, doi: 10.1016/j.engstruct.2020.110270.
- [4] M. Chen and B. Young, “Numerical analysis and design of cold-formed steel elliptical hollow sections under combined compression and bending”, Engineering Structures, vol. 241, art. no. 112417, 2021, doi: 10.1016/j.engstruct.2021.112417.
- [5] EN 1993-1-1 Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings (including EN 1993-1-1:2005/AC, 2009). Brussels, Belgium: CEN, 2005.
- [6] EN 1993-1-3 Eurocode 3: Design of Steel Structures, Part 1.3: General Rules, Supplementary Rules for Cold-formed Thin Gauge Members and Sheeting. Brussels, Belgium: CEN, 2006.
- [7] B. Huang and W.F. Zhang, “Overall buckling performance of high strength steel welded I-sections under combined axial compression and bending”, Archives of Civil Engineering, vol. 68, no. 3, pp. 369-384, 2022, doi: 10.24425/ace.2022.141891.
- [8] W.T. Koiter, General theory of mode interaction in stiffened plate and shell structures, WTHD Report 590. Delft, 1976.
- [9] Z. Kołakowski and K. Kowal-Michalska, Eds., Selected problems of instabilities in composite structures, A series of monographs. Lodz: Technical University of Lodz Press, 1999.
- [10] Z. Kolakowski, “A semi-analytical method for the analysis of the interactive buckling of thin-walled elastic structures in the second order approximation”, International Journal of Solids and Structures, vol. 33, no. 25, pp. 3779-3090, 1996, doi: 10.1016/0020-7683(95)00211-1.
- [11] M. Kotełko, et al., “Ultimate and post-ultimate behaviour of thin-walled cold-formed steel open-section members under eccentric compression. Part I: Collapse mechanisms database (theoretical study)”, Thin- Walled Structures, vol. 169, art. no. 108366, 2021, doi: 10.1016/j.tws.2021.108366.
- [12] Q.Y. Li and B. Young, “Tests of cold-formed steel built-up open section members under eccentric compressive load”, Journal of Constructional Steel Research, vol. 184, art. no. 106775, 2021, doi: 10.1016/j.jcsr.2021.106775.
- [13] Y. Liang, et al., “Stainless steel channel sections under combined compression and minor axis bending- Part 1: Experimental study and numerical modeling”, Journal of Constructional Steel Research, vol. 152, pp. 154-161, 2019, doi: 10.1016/j.jcsr.2018.03.027.
- [14] Y. Liang, et al., “Stainless steel channel sections under combined compression and minor axis bending-Part 2: Parametric studies and design”, Journal of Constructional Steel Research, vol. 152, pp. 162-172, 2019, doi: 10.1016/j.jcsr.2018.03.028.
- [15] Y. Liang, et al., “Experimental and numerical studies of laser-welded stainless steel channel sections under combined compression and major axis bending moment”, Thin-Walled Structures, vol. 157, art. no. 107035, 2020, doi: 10.1016/j.tws.2020.107035.
- [16] X. Meng and L. Gardner, “Testing, modelling and design of normal and high strength steel tubular beam-columns”, Journal of Constructional Steel Research, vol. 183, art. no. 106735, 2021, doi: 10.1016/j.jcsr.2021.106735.
- [17] T. H. Miller and T. Pekoz, “Load-eccentricity effects on cold-formed steel lipped-channel columns”, Journal of Structural Engineering, vol. 120, no. 3, pp. 805-823, 1994, doi: 10.1061/(ASCE)0733-9445(1994)120:3(805).
- [18] G.P. Mulligan and T. Peköz, “Locally buckled thin-walled columns”, Journal of Structural Engineering, vol. 110, no. 11, pp. 2635-2654, 1984, doi: 10.1061/(ASCE)0733-9445(1984)110:11(2635).
- [19] J. Rhodes and J.M. Harvey, “Interaction behaviour of plain channel columns under concentric or eccentric loading”, in Proc. 2nd Int. Colloquium on the Stability of Steel Structures. Liege (Belgium): ECCS, 1977, pp. 439-444.
- [20] V. Ungureanu, et al., “Buckling strength and post-ultimate behaviour of lipped channel section short columns under eccentric compression”, Thin-Walled Structures, vol. 181, art. no. 110085, 2022, doi: 10.1016/j.tws.2022.110085.
- [21] O. Zhao, L. Gardner, and B. Young, “Structural performance of stainless steel circular hollow sections under combined axial load and bending - Part 1: Experiments and numerical modeling”, Thin-Walled Structures, vol. 101, pp. 231-239, 2016, doi: 10.1016/j.tws.2015.12.003.
- [22] Y. Zhao, X. Zhai, and L. Sun, “Test and design method for the buckling behaviors of 6082-T6 aluminum alloy columns with box-type and L-type sections under eccentric compression”, Thin-Walled Structures, vol. 100, pp. 62-80, 2016, doi: 10.1016/j.tws.2015.12.010.
- [23] L. Zhang, et al., “Experimental and numerical investigations of press-braked stainless steel channel section beam-columns”, Thin-Walled Structures, vol. 161, art. no. 107344, 2021, doi: 10.1016/j.tws.2020.107344.
- [24] L. Zhang, et al., “Press-braked stainless steel channel sections under major axis combined loading: tests, simulations and design”, Journal of Constructional Steel Research, vol. 187, art. no. 106932, 2021, doi: 10.1016/j.jcsr.2021.106932.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-39389222-6dc4-4081-a928-b30c7ec5eba2