Demand for thin-walled structures has been increasing for many years. Cold- formed, thin-walled channel beams are the subject of presented research. The local elastic buckling and limit load of these beams subjected to pure bending are investigated. This study includes numerical investigation called the Finite Strip Method (FSM). The presented results give a deep insight into behaviour of such beams and may be used to validate analytical models. The number of works devoted to the theory of thin-walled structures has been steadily growing in recent years. It means that is an increasing interest in practical methods of manufacturing cold-formed thin-walled beams with complicated cross-sections, including also beams with web stiffeners. The ratio of transverse dimensions of beam to its wall-thickness is high, therefore, thin-walled beams are prone to local buckling that may interact with other buckling modes. The stability constraints should be always considered when using cold-formed thin-walled beams.
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[I] Ungureanu V.. Dubina D.. Sensitivity to Imperfections of Perforated Pallet Rack Sections. Mechanics and Mechanical Engineering 17(2) (2013) 207-220.
 Rasmussen K.J.R.. Hancock G.J.. Geometric imperfections in plated structures subject to interaction between buckling modes Thin-Walled Structures 6 (1988) 433-4S2.
 SudhirSastry V.B.. Krishna Y. Budarapu P.R.. Parametric studies on buckling of thin walled channel beams. Computational Materials Science 96 (201S) 416-424.
 BieniasJ.. GliszczynskiA.. Plakubczak.. KubiakT. Majersld K. Influence of autoclaving process parameters on the buckling and postbucklingbehaviour of thin-walled channel section beams Thin-Walled Structures 85 (2014) 262-270.
 Chen Y.. Chen X.. Wang C. Experimental and finite element analysis research on cold-formed steel lipped channel beams under web crippling Thin-Walled Structures. 87(4) (2015) 1-52.
 Maguucki K. Paczos P.. Optimal theoretical shape optimization of cold-formed thin-walled channel beams with drop flanges in pure bending. Journal of Construction Steel Research 65 (2009) 1731-1737.
 Belingardi G.. Scattina A.. Experimental investigation on the bending behaviour of hybrid and steel thin walled box beams - The role of adhesive joints. International Journal of Adhesion & Adhesives. 40 (2013) 31-37.
 Biegus A.. Czepizak 0.. Experimental investigations on combined resistance of corrugated sheets with strengthened cross-sections under bending and concentrated load Thin- Walled Structures 46 (2008) 303-309.
 Paczos P.. Wasilewicz P. Experimental investigations of buckling of lipped cold-formed thin-walled beams with I section. Thin-Walled Structures 47 (2009) 1354-1362.
 Mahendran M. leyaragan >!. Experimental investigation of the new built-up litesteel beams. Proc. 5th Int. Conference on Thin-Walled Structures Vbl.LM. Mahendran (Editor) Queensland University of Technology. Brisbane Australia. ICTWS. 18-20 June 2008 pp. 433-441.
 Maguucka-Blandzi E- Maguucki K. Buckling and optimal design of cold- formed dun-walled beams: review of selected problems Thin-Walled Structures. 49 (2011) 554-56L
 Magnucka-Blandzi E. Paczos P. Wasilewicz P.. Buckling study of thin-walled channel beams with double-box flanges in pure bending. Blackwell Publishing Ltd. Strain. An Intl Journal for Experimental Mechanics 48 (2012) 317-325.
 Maguucki K Paczos P.. Kasprzak J.. Elastic buckling of cold- formed thin-walled channel beams with drop flanges. Journal of Structural Engineering-ASCE .136(7) (2010) 886-896.
 Paczos P. Experimental and numerical (FSM) investigations of thin-walled beams with double-box flanges. Journal of Theoretical and Applied Mechanics 51(2) (2013) 497-504.
 Paczos P.. Experimental investigations of thin-walled C-beams with nonstandard flanges. Journal of Constructional Steel Research 93 (2014) 77-87.
 Debsld H.. Kubiak T„ Teter A.. Experimental investigation of channel-section composite profiles behaviour with various sequences of plies subjected to static compression. Thin- Walled Structures 71 (2013) 147-154
 Kolakowski Z. Mania R.J.. Semi-analytical method versus the FEM for analyzing of the local post-buckling of thin-walled composite structures. Composite Structures 97 (2013) 99- 106
 Loughlan [. Vidris N„ [ones K. The failure of thin-walled lipped channel compression members due to coupled local- distortional interactions and material yielding Thin-Walled Structures 61 (2012) 14-2 L
 Luo Hong-Guang. Guo Yao-Jie. Ma Shi-Cheng. Distortional budding of thin-walled inclined lipped channel beams bending about the minor axis. Journal of Constructional Steel Research 67 (2011) 1884-1889.
 Cam on m D.. Dims P.B.. Coupled instabilities with distortional budding in cold-formed steel lipped channel columns. Stability of Structures XJTTH Symposium. Zakopane 7-11 September 2009. Technical University of Lodz 13-32.
 Silvestre N- Camorim 0.. On the mechanics of distortion in thin-walled open sections. Thin-Walled Structures 48 (2010) 469-481.
 Trail air N.S.. Buckling analysis design of steel frames. Journal of Constructional Steel Research. 65 (2009) 1459-1463.
 Adam' S- Schafer B.W.. Buckling mode decomposition of single-branched open cross-section members via finite strip method: Derivation. Thin-Walled Structures. 44 (2006) 563-584.
 Maguucki K.. Rodak M.. Lewinsld [. Optimization of mono- and anti-symmetrical I-section of cold-formed dun-walled beams. Thin-Walled Structures 44 (2006) 832-836.
 Loughlan J.. Vidris N.. The post-local buckling mechanics and ultimate carrying capability of uniformly compressed thin- walled I-section struts and columns. Stability of Structures XIITH Symposium Zakopane 7-11 September 2009. Technical University of Lodz. pp. 33-48.
 Magnucki K- Magnucka-Blandzi E..Variational design of open cross section thin-walled beam under stability constraints Thin-Walled Structures. 35(3) 1999 185-191.
 Magnucki K. Monczak T.. Optimum shape of the open cross section of thin-walled beams. Engineering Optimization. 32(3) (2000) 335-351.
 Magnucki K. Macttiewicz M.. Lewiiiski J.. Optimal design of a mono-symmetrical open cross section of a cold-formed beam with cosinusoidally corrugated flanges. Thin-Walled Structures. 44(5) (2006) 554-562.
 CEN. European Committee for Standardisation. EN 1993-1- 3: Eurocode 3 - Design of Steel Structures - Part 1-3: General rules - Supplementary rules for cold-formed members and sheeting 2006.
 Adam' S- Schafer B.W.. Buckling mode decomposition of single-branched open cross-section members via finite strip method: Derivation Thin-Walled Structures. 44 (2006) 563-584.
 Li Z.. Schafer B.W.. Application of the finite strip method in cold-formed steel member design. Journal of Constructional Steel Research 66 (2010) 971-980.
 Beregszaszi Z-. Adam* S.. The Effect of Rounded Corners of Cold-Formed Steel Members in die Budding Analysis via the Direct Strength Method Proceedings of the twelfth Internationa] Conference on Civil Structural and Environmental Engineering Computing Edited by: B.H.V. Topping LF„ Costa Neves and R.C Barros. 2009 Paper 36.
 Adam*S . JooAX.. Schafer B.W.. Buckling mode identification of thin-walled members by using cFSM base functions Thin- Walled Structures 48 (2010) 806-817.
 Diafour M-. Djafour N„ Megnounif A.. Kerdal D.E.. A constrained finite strip method for open and closed cross- section members Thin-Walled Structures 48 (2010) 955-965.
 Chu T.X.. Ye Z-. Li L. Kettle R.. Local and distortional buckling of cold-formed zed-section beams under uniformly distributed transverse loads. International Journal of Mechanical Sciences. 48(2006)378-388.
 Magnucka-Blandzi E.. Paczos P.. Wasilewicz P.. Buckling Study of Thin-walled Channel Beams with Double-box Flanges in Pure Bending Strain 48(4) (2012) 317-325.
 Schafer B.W. Designing Cold-Formed Steel Using the Direct Strength Method. 18-th International Specialty Conference on Cold-Formed Steel Structures October 26-27 2006 Orlando Florida.
 Grenda >!. Paczos P. Experimental investigation of thin- walled channel beams with bend web. 6th International Conference on Structural Engineering Mechanics and Computation SEMC 2016 Cape Town South Africa SEMC 2016. Insights and Innovations in Structural Engineering Mechanics and Computation. A. Zingoni (Ed). Taylor & Francis Group London ISBN978-1-13 8-0292 7-91034-1037.