Detail publikace

Sensitivity Analysis of Stability Problems of Steel Plane Frames

KALA, Z.

Originální název

Sensitivity Analysis of Stability Problems of Steel Plane Frames

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The objective of the paper is to analyse the influence of initial imperfections on the load-carrying capacity of a single storey steel plane frame comprised of two columns loaded in compression. The influence of the variance of initial imperfections on the variance of the load-carrying capacity was calculated by means of Sobol' sensitivity analysis. Monte Carlo based procedures were used for computing full sets of first order and second order sensitivity indices of the model. The geometrical nonlinear finite element solution, which provides numerical results per run, was employed. The mutual dependence of sensitivity indices and column non-dimensional slenderness is analysed. The derivation of the statistical characteristics of system imperfections of the initial inclination of columns is described in the introduction of the present work. Material and geometrical characteristics of hot-rolled IPE members were considered to be random quantities with histograms obtained from experiments. The Sobol' sensitivity analysis is used to identify the crucial input random imperfections and their higher order interaction effects.

Klíčová slova

Sensitivity, Steel, Stability, Imperfections, Frame, Statistic, Elastic

Autoři

KALA, Z.

Rok RIV

2011

Vydáno

1. 3. 2011

Místo

GB

ISSN

0263-8231

Periodikum

THIN-WALLED STRUCTURES

Ročník

49

Číslo

5

Stát

Spojené království Velké Británie a Severního Irska

Strany od

645

Strany do

651

Strany počet

7

BibTex

@article{BUT50471,
  author="Zdeněk {Kala}",
  title="Sensitivity Analysis of Stability Problems of Steel Plane Frames",
  journal="THIN-WALLED STRUCTURES",
  year="2011",
  volume="49",
  number="5",
  pages="645--651",
  issn="0263-8231"
}