Přístupnostní navigace
E-application
Search Search Close
Publication detail
KALA, Z.
Original Title
Modelling Initial Geometric Imperfections of Steel Plane Frames using Entropy and Eigenmodes
Type
journal article in Scopus
Language
English
Original Abstract
The article introduces an innovative approach to modelling initial geometric imperfections in steel plane frames. Initial imperfections are introduced using the analysis of normalised deformations of elastic buckling modes. The scale of these modes is assessed by applying Shannon entropy and potential energy analysis. The presented case study demonstrates a decreasing scale of the elastic buckling modes. The entropy computed from the deformation reveals a new perspective on buckling modes and provides a more profound understanding of steel frame behaviour. The case study results indicate that anti-symmetric buckling modes exhibit higher entropy than symmetric buckling modes. This entropy-based analysis enables the differentiation between symmetric and anti-symmetric buckling modes, which is particularly valuable when the critical buckling loads of sway and non-sway buckling modes are closely aligned or overlap.
Keywords
Buckling, entropy, eigenmode, frame, structure, elastic stability, imperfections
Authors
Released
24. 7. 2023
Publisher
North Atlantic University Union (NAUN)
Location
USA
ISBN
1998-4448
Periodical
International Journal of Mechanics
Year of study
17
Number
1
State
United States of America
Pages from
64
Pages to
73
Pages count
10
URL
https://npublications.com/journals/mechanics/2023/a202003-010(2023).pdf
Full text in the Digital Library
http://hdl.handle.net/11012/245003
BibTex
@article{BUT187532, author="Zdeněk {Kala}", title="Modelling Initial Geometric Imperfections of Steel Plane Frames using Entropy and Eigenmodes", journal="International Journal of Mechanics", year="2023", volume="17", number="1", pages="64--73", doi="10.46300/9104.2023.17.10", issn="1998-4448", url="https://npublications.com/journals/mechanics/2023/a202003-010(2023).pdf" }