Buckling and Vibration
Analysis of
Thin-Walled Members
Latest version: 1.0b
Contents:
General Top È
The code Gbtul (acronym for “GBT at the TU Lisbon”),
performs elastic buckling (bifurcation) and vibration analyses of prismatic thin-walled
members.
Taking advantage of the GBT modal features, the
program provides information and visualisation on the member deformation modes.
Moreover, it contains tools that make it possible to select the deformation
modes to include in the analysis, thus allowing for a in-depth
insight into the mechanics of the problem being solved. It is possible to
analyse members (i) made of one or several isotropic
or orthotropic materials, and (ii) exhibiting various common support conditions
(e.g., simple supports, fixed
supports or free ends). In the buckling analyses, the user is able to specify
any combination of arbitrary axial force, bending moment and bimoment (longitudinal) diagrams.
Gbtul contains a user-friendly and intuitive graphical interface (i) with a small number of commands and (ii) providing
high-quality 2D and 3D outputs.
Documents Top È
The following documents provide the user with all the
information necessary not only to use Gbtul, but also to understand its
inputs/outputs as well as the GBT main features.
·
Program Manual (version 1.0b):
A brief description of the program commands, inputs and outputs. [PDF]
·
GBT Theoretical Background (version 1.0b):
A concise description of the GBT theoretical aspects that are relevant to
understand how the program works. Contains a list of references. [PDF]
·
Illustrative Examples – Multimedia Tutorials (version 1.0b): The following multimedia (video with audio comments) tutorials provide
a quick and practical way to learn how to perform a Gbtul analysis. Two illustrative
examples are presented:
o
Buckling Analysis: I-section cantilevers under tip point load [ZIP]
o
Vibration Analysis: Cold formed simply
supported “rack” beam [ZIP]
Program Download Top È
Press this button to
download Gbtul
1.0b.
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Minimum
Requirements |
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Hardware |
Software |
|
·
CPU: Intel P IV (core
solo) at 2.6Mhz ·
Memory: 512 Mb RAM ·
HDD: 8 Mb |
·
Windows XP or ·
Cortona Player1 ·
.Net Framework 2.02 |
|
NOTES: 1
This viewer is necessary to visualise 3D plots. It can be downloaded, as
freeware, from http://www.parallelgraphics.com/products/cortona. 2 .Net Framework is included in the
Windows Server 2008 and Windows Vista. Otherwise, it can be downloaded, as freeware, from http://msdn.microsoft.com/en-gb/netframework/default.aspx. |
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How to Cite Top È
Gbtul is to be referenced as follows:
Bebiano R., Pina P., Silvestre N. and Camotim D. (2008). GBTUL – Buckling and Vibration Analysis of
Thin-Walled Members, DECivil/IST, Technical University of Lisbon
(http://www.civil.ist.utl.pt/gbt).
Give
us feedback! Top È
We would be delighted to hear about your experience
using Gbtul.
Please send us your comments, suggestions, bug reports or questions – we will
answer as soon as possible. Our contact e-mails are: