Numerical study and buckling behavior of web-posts in stainless-steel cellular beams
Imane Bachguar, Ouadia Mouhat, Rabee Shamass, Fatima El Mennaouy
Abstract. Owing to their structural efficiency, cellular steel beams are increasingly used in construction. These beams are characterised by a unique shape that lightens the structure without compromising its strength. In terms of mechanical performance, the presence of these openings causes a concentration of stresses around them, which leads to a redistribution of forces within the beam. In this work, we will explore the use of stainless steel cellular beams in order to highlight the unique aspects of their mechanical behaviour, which varies from that of carbon steel. The most significant difference lies in the configuration of the stress-strain curve. While carbon steel is characterised by linear-elastic stress-strain behaviour, followed by a plateau before work hardening begins, stainless steel has no clearly defined yield strength and exhibits non-linear response and significant work hardening. In order to perform our finite element simulations, stainless steel cellular beams with different characteristics and material properties were used. The objective is to study the structural behaviour of these beams and to analyse the effect of the beam geometry and mechanical characteristics on the overall structural response. In this regard, a mechanical model was adjusted and validated using the results of numerical analyses, thus enabling the phenomenon of buckling failure of the web element to be described.
Keywords
Stainless Steel, Carbon Steel, Cellular Beams, Buckling, FEM
Published online 1/10/2026, 7 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Imane Bachguar, Ouadia Mouhat, Rabee Shamass, Fatima El Mennaouy, Numerical study and buckling behavior of web-posts in stainless-steel cellular beams, Materials Research Proceedings, Vol. 58, pp 17-23, 2026
DOI: https://doi.org/10.21741/9781644903933-3
The article was published as article 3 of the book Emerging Research in Materials for Environment, and Civil Infrastructure
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] R.M. Lawson, J. Lim, S.J. Hicks, W.I. Simms, Design of composite asymmetric cellular beams and beams with large web openings, Journal of Constructional Steel Research. 62 (2006) 614–629. https://doi.org/10.1016/j.jcsr.2005.09.012
[2] F. Erdal, M.P. Saka, Ultimate load carrying capacity of optimally designed steel cellular beams, Journal of Constructional Steel Research. 80 (2013) 355–368. https://doi.org/10.1016/j.jcsr.2012.10.007
[3] P. Panedpojaman, T. Thepchatri, S. Limkatanyu, Novel design equations for shear strength of local web-post buckling in cellular beams, Thin-Walled Struct. 76 (2014) 92–104.
[4] K.D. Tsavdaridis, C. D’Mello, Web buckling study of the behaviour and strength of perforated steel beams with different novel web opening shapes, Journal of Constructional Steel Research. 67 (2011) 1605–1620. https://doi.org/10.1016/j.tws.2013.11.007
[5] L.F. Grilo, R.H. Fakury, G. de Souza Veríssimo, Design procedure for the web-post buckling of steel cellular beams, Journal of Constructional Steel Research. 148 (2018) 525–541. https://doi.org/10.1016/j.jcsr.2018.06.020
[6] J. Ward, Design of Composite and Non-Composite Cellular Beams, The Steel Construction Institute, SCI Publication, 1990.
[7] S. Fares, J. Coulson, D. Dinehart, Steel Design Guide 31: Castellated and Cellular Beam Design, AISC, 2016.
[8] CEN, Eurocode 3: Design of Steel Structures, Part 1-1 “General Rules and Rules for Buildings”, CEN, Brussels: European Committee for Standardization, 2005.
[9] B. Rossi, Discussion on the use of stainless steel in constructions in view of sustainability, Thin-Walled Struct. 83 (2014) 182–189. https://doi.org/10.1016/j.tws.2014.01.021
[10] R. Shamass, F. Guarracino, Numerical and analytical analyses of high-strength steel cellular beams: A discerning approach, Journal of Constructional Steel Research. 166 (2020) 105911. https://doi.org/10.1016/j.jcsr.2019.105911
[11] K.J. Rasmussen, Full-range stress–strain curves for stainless steel alloys, Journal of Constructional Steel Research. 59 (2003) 47–61. https://doi.org/10.1016/S0143-974X(02)00018-4
