Detail publikačního výsledku

Modelling Initial Geometric Imperfections of Steel Plane Frames using Entropy and Eigenmodes

KALA, Z.

Originální název

Modelling Initial Geometric Imperfections of Steel Plane Frames using Entropy and Eigenmodes

Anglický název

Modelling Initial Geometric Imperfections of Steel Plane Frames using Entropy and Eigenmodes

Druh

Článek Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

Buckling, entropy, eigenmode, frame, structure, elastic stability, imperfections

Klíčová slova v angličtině

Buckling, entropy, eigenmode, frame, structure, elastic stability, imperfections

Autoři

KALA, Z.

Rok RIV

2024

Vydáno

24.07.2023

Nakladatel

North Atlantic University Union (NAUN)

Místo

USA

ISSN

1998-4448

Periodikum

International Journal of Mechanics

Svazek

17

Číslo

1

Stát

Spojené státy americké

Strany od

64

Strany do

73

Strany počet

10

URL

https://npublications.com/journals/mechanics/2023/a202003-010(2023).pdf

Plný text v Digitální knihovně

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"
}

Dokumenty

a202003-010(2023)