Buckling Analysis of Cellular Beams

  Shwetha Saju,  Manju George

Castellated beams are those beams which has openings in its web portion. Use of castellated beams has become very popular now a days due to its advantageous structural applications. This is due to increased depth of section without any additional weight, high strength to weight ratio, their lower maintenance and painting cost. The openings made in the webs are of generally hexagonal, circular, diamond or square in shape. Therefore, considering structural performance of the beam, the size and shape of openings provided in the web are always an important issue of concern. In this paper a steel section is selected,different castellated beams are fabricated with different web openings. The finite element analysis (FEA) of the beams using Ansys 14.5 software was done. Buckling analysis of the web post as a failure mode of castellated beam has been studied and concluded that cellular beam is best for structural applications. In this paper, parametric study of cellular beams has been carried out to optimize its size by considering the ratio of spacing of opening to the depth of opening (S/Do) and various buckling loads were calculated. Analytical study is also done by varying different parameters in cellular beam such as cell diameter , cell spacing , cell shape. It was observed that the cellular beams failed mainly due to Vierendeel mechanism. An optimum design for cellular beams were also studied based on Eurocode 3

Keywords- Buckling, castellated beam, cellular beam, finite element analysis, optimization of web openings, strut analogy, vierendeel mechanism, web openings, web post.

Unique Identification Number - IJEDR1504047
Page Number(s) - 316-320
Pubished in - Volume 3 | Issue 4 | November 2015
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Shwetha Saju,  Manju George,   "Buckling Analysis of Cellular Beams", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.3, Issue 4, pp.316-320, November 2015, Available at :http://www.ijedr.org/papers/IJEDR1504047.pdf