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MELCHER, J. ŠKALOUD, M. KALA, Z. KARMAZÍNOVÁ, M.
Original Title
Statistical and sensitivity analysis within the elaboration of steel plated girder resistance
Type
conference paper
Language
English
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.
Keywords
Statistical analysis, sensitivity analysis, steel plated girder resistance
Authors
MELCHER, J.; ŠKALOUD, M.; KALA, Z.; KARMAZÍNOVÁ, M.
RIV year
2007
Released
1. 1. 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
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", booktitle="Proceedings of the 6th International Conference {"}Steel and Aluminium Structures ICSAS '07{"}", year="2007", pages="309--315", publisher="Oxford Brookes University", address="Oxford", isbn="978-0-9556254-0-4" }