Session Dates

05 Nov 2014 - 05 Nov 2014

Abstract

This paper presents the very recent 2.0 release of software GBTUL – a computer code developed by the authors and made available as freeware at the website of the Department of Civil Engineering of the Technical University of Lisbon (Bebiano et al. 2013). The program performs linear buckling and vibration analyses of thin-walled bars based on Generalized Beam Theory (GBT), a bar theory that accounts for cross-section deformation. Its domain of application is much wider than that of the previous release (1.0ß): indeed, it is now possible to analyze single or multi-span members (i) with various support conditions, including those stemming from discrete bracing systems, (ii) exhibiting open, closed or “mixed” (combining closed cells with open branches) cross-sections and (iii) acted by fairly arbitrary loadings, including concentrated and/or distributed transverse loads away from the member shear center axis. The Graphical User Interface (GUI) of the program is described and its main commands are addressed. For illustrative purposes, results concerning the buckling analysis of a two-span I-section beam subjected to mid-span concentrated loads are presented and discussed.

Department(s)

Civil, Architectural and Environmental Engineering

Research Center/Lab(s)

Wei-Wen Yu Center for Cold-Formed Steel Structures

Sponsor(s)

Fundação para a Ciência e Tecnologia

Meeting Name

22nd International Specialty Conference on Cold-Formed Steel Structures

Publisher

Missouri University of Science and Technology

Document Version

Final Version

Rights

© 2014 Missouri University of Science and Technology, All rights reserved.

Comments

The authors gratefully acknowledge the financial support of “Fundação para a Ciência e Tecnologia” (FCT −Portugal), through research project “Generalized Beam Theory (GBT): Development, Application and Dissemination” (PTDC/ECM/108146/2008).

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Nov 5th, 12:00 AM Nov 5th, 12:00 AM

GBTUL 2.0 −A New/Improved Version of the GBT-Based Code for the Buckling Analysis of Cold-Formed Steel Members

This paper presents the very recent 2.0 release of software GBTUL – a computer code developed by the authors and made available as freeware at the website of the Department of Civil Engineering of the Technical University of Lisbon (Bebiano et al. 2013). The program performs linear buckling and vibration analyses of thin-walled bars based on Generalized Beam Theory (GBT), a bar theory that accounts for cross-section deformation. Its domain of application is much wider than that of the previous release (1.0ß): indeed, it is now possible to analyze single or multi-span members (i) with various support conditions, including those stemming from discrete bracing systems, (ii) exhibiting open, closed or “mixed” (combining closed cells with open branches) cross-sections and (iii) acted by fairly arbitrary loadings, including concentrated and/or distributed transverse loads away from the member shear center axis. The Graphical User Interface (GUI) of the program is described and its main commands are addressed. For illustrative purposes, results concerning the buckling analysis of a two-span I-section beam subjected to mid-span concentrated loads are presented and discussed.