GBT buckling analysis of generally loaded thin-walled members exhibiting arbitrary flat-walled cross-sections

Rui Bebiano, Cilmar Basaglia, Dinar Camotim, Rodrigo Goncalves

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A recently developed Generalized Beam Theory (GBT) formulation (Basaglia et al. 2013) is employed to perform buckling analyses of thin-walled members (i) exhibiting arbitrary flat-walled cross-sections, namely combinations of closed cells and open branches, and (ii) subjected to general loadings, including transverse loads acting away from the shear center axis. The above formulation, which is briefly presented in the first part of the paper, is employed to analyze the buckling behavior of two closed-cell beams namely (i) a RHS cantilever acted by two tip point loads and (ii) a closed-flange I-section simply supported beam subjected to a uniformly distributed load. In both cases, the loads are applied at the shear center axis and also at a parallel axes located at the top and bottom of the beam. The results presented and discussed, which consist of pre-buckling stress fields, buckling curves and buckling mode configurations, are obtained by means of the newly released code GBTUL 2.0 and validated by means of shell finite element analyses carried out in the code Ansys.

Original languageEnglish
Title of host publicationStructural Stability Research Council Annual Stability Conference 2015, SSRC 2015
PublisherStructural Stability Research Council (SSRC)
Pages90-104
Number of pages15
ISBN (Electronic)978-151080234-6
Publication statusPublished - 2015
EventStructural Stability Research Council Annual Stability Conference 2015, SSRC 2015 - Nashville, United States
Duration: 24 Mar 201527 Mar 2015

Conference

ConferenceStructural Stability Research Council Annual Stability Conference 2015, SSRC 2015
CountryUnited States
CityNashville
Period24/03/1527/03/15

Keywords

  • Finite element method
  • Stability
  • Thin walled structures
  • Buckling analysis
  • Buckling behaviors;
  • Distributed loads
  • Generalized beam theories
  • Pre-buckling stress
  • Shell finite elements
  • Simply supported beams
  • Thin-walled members

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