Publication detail

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

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

KALA, Z.

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"
}