Detail publikačního výsledku

Sensitivity Analysis of Steel Plane Frames with Initial Imperfections

KALA, Z.

Originální název

Sensitivity Analysis of Steel Plane Frames with Initial Imperfections

Anglický název

Sensitivity Analysis of Steel Plane Frames with Initial Imperfections

Druh

Článek recenzovaný mimo WoS a Scopus

Originální abstrakt

The article presents the sensitivity and statistical analyses of the load-carrying capacity of a steel portal frame. It elaborates a typical stability problem of a system comprising two single-storey columns loaded in compression. The elements of this system mutually influence each other, and this fact, in conjunction with the random imperfections, influences the load-carrying capacity variance. This mutual interaction is analysed using the Sobol sensitivity analysis. The Sobol sensitivity analysis is applied to identify the dominant input random imperfections and their higher order interaction effects on the load-carrying capacity. Majority of imperfections were considered according to the results of experimental research. Realizations of initial imperfections were simulated applying the Latin Hypercube Sampling method. The geometrical nonlinear solution providing numerical result per run was employed. The frame was meshed using beam elements. The columns of the plane frame are considered with two variants of boundary conditions. The dependence between mean and design load-carrying capacities and column non-dimensional slenderness is analysed.

Anglický abstrakt

The article presents the sensitivity and statistical analyses of the load-carrying capacity of a steel portal frame. It elaborates a typical stability problem of a system comprising two single-storey columns loaded in compression. The elements of this system mutually influence each other, and this fact, in conjunction with the random imperfections, influences the load-carrying capacity variance. This mutual interaction is analysed using the Sobol sensitivity analysis. The Sobol sensitivity analysis is applied to identify the dominant input random imperfections and their higher order interaction effects on the load-carrying capacity. Majority of imperfections were considered according to the results of experimental research. Realizations of initial imperfections were simulated applying the Latin Hypercube Sampling method. The geometrical nonlinear solution providing numerical result per run was employed. The frame was meshed using beam elements. The columns of the plane frame are considered with two variants of boundary conditions. The dependence between mean and design load-carrying capacities and column non-dimensional slenderness is analysed.

Klíčová slova

Structure; Portal frame; Sensitivity analysis; Steel; Imperfection; Stability; Buckling; Simulation; Variance

Klíčová slova v angličtině

Structure; Portal frame; Sensitivity analysis; Steel; Imperfection; Stability; Buckling; Simulation; Variance

Autoři

KALA, Z.

Rok RIV

2012

Vydáno

15.08.2011

Místo

GB

ISSN

0141-0296

Periodikum

ENGINEERING STRUCTURES

Svazek

33

Číslo

8

Stát

Spojené království Velké Británie a Severního Irska

Strany od

2342

Strany do

2349

Strany počet

8

BibTex

@article{BUT89774,
  author="Zdeněk {Kala}",
  title="Sensitivity Analysis of Steel Plane Frames with Initial Imperfections",
  journal="ENGINEERING STRUCTURES",
  year="2011",
  volume="33",
  number="8",
  pages="2342--2349",
  issn="0141-0296"
}