Journal of Theoretical
and Applied Mechanics

0, 0, pp. , Warsaw 0

Local stability experimental and numerical study of non-standard thin-walled channel beams

Michał Grenda, Piotr Paczos
The subject of the paper is cold-formed, thin-walled non-standard channel beams with stiffened webs. The local elastic buckling and limit load of these beams subjected to pure bending are investigated. This study includes numerical, based on the Finite Element Method and the Finite Strip Method, calculations and actual tests of beams in laboratory. The presented results give a deep insight into behaviour of such beams and may be used to validate analytical models.
Keywords: thin-walled beams, experimental investigation, numerical investigations, pure bending,


Adany S., Joo A.L., Schafer B.W., 2010, Buckling mode identification of thin-walled members by using cFSM base functions, Thin-Walled Structures, 48, 806–817

Adany S., Schafer B.W., 2006, Buckling mode decomposition of single-branched open cross-section members via finite strip method: Derivation, Thin-Walled Structures, 44, 563–584

Bambach M.R., 2009, Photogrammetry measurements of buckling modes and interactions in channels with edge-stiffened, Thin-Walled Structures, 47, 485–504

Beregszászi Z., Ádány S., 2009, The Effect of Rounded Corners of Cold-Formed Steel Members in the Buckling Analysis via the Direct Strength Method, Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing, Paper 36

Biegus A., Czepiżak D., 2008, Experimental investigations on combined resistance of corrugated sheets with strengthened cross-sections under bending and concentrated load, Thin-Walled Structures, 46, 303–309

CEN, European Committee for Standardisation, 2006, EN 1993-1-3: Eurocode 3 - Design of Steel Structures – Part 1-3: General rules – Supplementary rules for cold-formed members and sheeting

Cheng Yu, Schafer B.W., 2007, Simulation of cold-formed steel beams in local and distortional buckling with applications to the direct strength method, Journal of Constructional Steel Research, 63, 581–590

Chu T.X., Ye Z., Li L., Kettle R., 2006, Local and distortional buckling of cold-formed zed-section beams under uniformly distributed transverse loads, International Journal of Mechanical Sciences, 48, 378–388

Djafour M., Djafour N., Megnounif A., Kerdal D.E, 2010, A constrained finite strip method for open and closed cross-section members, Thin-Walled Structures, 48, 955–965

Goncalves R., Ritto-Corrêa M., Camotim D., 2010, A large displacement and finite rotation thin-walled beam formulation including cross-section deformation, Computer Methods Applied Mechanics and Engineering, 199, 1627–1643

Ibrahim S.M., Carrera E., Petrolo M., Zappino E., 2012, Buckling of thin-walled beams by a refined theory, Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 13, 10, 747–759

Kwon Y.B., Kim B.S, Hancock G.J., 2009, Compression tests of high strength cold-formed steel channels with buckling interaction, Journal of Constructional Steel Research, 65, 278–289

Li Z., Schafer B.W., 2010, Application of the finite strip method in cold-formed steel member design, Journal of Constructional Steel Research, 66, 971–980

Magnucki K., Paczos P., 2009, Theoretical shape optimization of cold-formed thin-walled channel beams with drop flanges in pure bending, Journal of Construction Steel Research, 65, 1731–1737

Magnucki K., Paczos P., Kasprzak J., 2010, Elastic buckling of cold-formed thin-walled channel beams with drop flanges, ASCE, Journal of Structural Engineering, 136, 7, 886- 896

Mahendran M., Jeyaragan M., 2008, Experimental investigation of the new built-up lite steel beams, Proceedings of 5th Int. Conference on Thin-Walled Structures, 433–441

Obst M., Kurpisz D., Paczos P., 2016, The experimental and analytical investigations of torsion phenomenon of thin-walled cold formed channel beams subjected to four-point bending, Thin-Walled Structures, 106, 179–186

Obst M., Rodak M., Paczos P., 2016, Limit load of cold formed thin-walled nonstandard channel beams, Journal of Theoretical and Applied Mechanics, 54, 1369–1377

Paczos P., 2013, Experimental and numerical (FSM) investigations of thin-walled beams with double-box flanges, Journal of Theoretical and Applied Mechanics, 51, 2, 497–504

Paczos P., 2014, Experimental investigations of thin-walled C-beams with nonstandard flanges, Journal of Constructional Steel Research, 93, 77–87

Paczos P., Wasilewicz P., 2009, Experimental investigations of buckling of lipped, cold- formed thin-walled beams with I section, Thin-Walled Structures, 47, 1354–1362

Paczos P., Wasilewicz P., Magnucka-Blandzi E., 2016, Experimental and numerical investigations of five-layered trapezoidal beams, Composite Structures, 145, 129–141

Paczos P., Zawodny P. and Magnucki K., 2008, Stress state and displacements of cold formed thin-walled channel beams, Proceedings of the Ninth Intl Conference on Computational Structures Technology, 1–10

Pastor M.M., Roure F., 2008, Open cross-section beams under pure bending. I. Experimental investigations, Thin-Walled Structures, 46, 476–483

Schafer B. W., 2002, Local, Distortional and Euler buckling of thin-walled columns, Journal of Structural Engineering, 128, 3, 289–299

Schafer B.W., 2006, Designing Cold-Formed Steel Using the Direct Strength Method, 18- th International Specialty Conference on Cold-Formed Steel Structures

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