Publication detail

Statistical and sensitivity analysis within the elaboration of steel plated girder resistance

MELCHER, J. ŠKALOUD, M. KALA, Z. KARMAZÍNOVÁ, M.

Original Title

Statistical and sensitivity analysis within the elaboration of steel plated girder resistance

English Title

Statistical and sensitivity analysis within the elaboration of steel plated girder resistance

Type

conference paper

Language

en

Original Abstract

The objective of thr paper is to analyse the influence of initial imperfections on the behaviour of thin-walled girders welded of slender plate elements. The girder wasmodelled, using the geometrically and materially non-linear variant of the shell finite element method, by the ANSYS program. The ultimate static load-carrying capacity and the state of stress were considered as the output analysed quantities. The influence of the variability of initial imperfections on the variability of ultimate static load-carrying capacity and on the variability of the state of stress studies was calculated by sensitivity analysis. The sensitivity analysis was evaluated on a computer by appling the numerical simulation LHS method and statistical characteristics evaluated, based on the experiments. Real tests of girders with random initial imperfections the occurrence frequency of which is equivalent to experimental results are simulated numerically. In each LHS method run, both load-carrying capacity and state of stress are evaluated on the model based on nonlinear variant of shell finite elements. The stress state was evaluated by bending stresses developing in the crack-prone areas of a web "breathing" under repeated loads, which - as it was demonstrated by the experiments - occurred at the toes of the fillet welds connecting the "breathing" web with the girder flanges and stiffeners.

English abstract

The objective of thr paper is to analyse the influence of initial imperfections on the behaviour of thin-walled girders welded of slender plate elements. The girder wasmodelled, using the geometrically and materially non-linear variant of the shell finite element method, by the ANSYS program. The ultimate static load-carrying capacity and the state of stress were considered as the output analysed quantities. The influence of the variability of initial imperfections on the variability of ultimate static load-carrying capacity and on the variability of the state of stress studies was calculated by sensitivity analysis. The sensitivity analysis was evaluated on a computer by appling the numerical simulation LHS method and statistical characteristics evaluated, based on the experiments. Real tests of girders with random initial imperfections the occurrence frequency of which is equivalent to experimental results are simulated numerically. In each LHS method run, both load-carrying capacity and state of stress are evaluated on the model based on nonlinear variant of shell finite elements. The stress state was evaluated by bending stresses developing in the crack-prone areas of a web "breathing" under repeated loads, which - as it was demonstrated by the experiments - occurred at the toes of the fillet welds connecting the "breathing" web with the girder flanges and stiffeners.

Keywords

Statistical analysis, sensitivity analysis, steel plated girder resistance

RIV year

2007

Released

01.01.2007

Publisher

Oxford Brookes University

Location

Oxford

ISBN

978-0-9556254-0-4

Book

Proceedings of the 6th International Conference "Steel and Aluminium Structures ICSAS '07"

Pages from

309

Pages to

315

Pages count

7

Documents

BibTex


@inproceedings{BUT25439,
  author="Jindřich {Melcher} and Miroslav {Škaloud} and Zdeněk {Kala} and Marcela {Karmazínová}",
  title="Statistical and sensitivity analysis within the elaboration of steel plated girder resistance",
  annote="The objective of thr paper is to analyse the influence of initial imperfections on the behaviour of thin-walled girders welded of slender plate elements. The girder wasmodelled, using the geometrically and materially non-linear variant of the shell finite element method, by the ANSYS program. The ultimate static load-carrying capacity and the state of stress were considered as the output analysed quantities. The influence of the variability of initial imperfections on the variability of ultimate static load-carrying capacity and on the variability of the state of stress studies was calculated by sensitivity analysis. The sensitivity analysis was evaluated on a computer by appling the numerical simulation LHS method and statistical characteristics evaluated, based on the experiments. Real tests of girders with random initial imperfections the occurrence frequency of which is equivalent to experimental results are simulated numerically. In each LHS method run, both load-carrying capacity and state of stress are evaluated on the model based on nonlinear variant of shell finite elements. The stress state was evaluated by bending stresses developing in the crack-prone areas of a web "breathing" under repeated loads, which - as it was demonstrated by the experiments - occurred at the toes of the fillet welds connecting the "breathing" web with the girder flanges and stiffeners.",
  address="Oxford Brookes University",
  booktitle="Proceedings of the 6th International Conference "Steel and Aluminium Structures ICSAS '07"",
  chapter="25439",
  institution="Oxford Brookes University",
  year="2007",
  month="january",
  pages="309--315",
  publisher="Oxford Brookes University",
  type="conference paper"
}