Statistical screening of individual and joint effect of several modelling factors on the dynamic finite element response of a railway bridge
2012 (English)In: Computers & structures, ISSN 0045-7949, E-ISSN 1879-2243, Vol. 106, 91-104 p.Article in journal (Refereed) Published
More accurate dynamic analysis of bridges is preferred instead of using the dynamic amplification factors in design codes to estimate the dynamic load effects. Additionally, the potentials of statistical methods are often overlooked and seldom used among structural engineers. However, for bridge engineers the parametric studies are still conservative and the finite element (FE) model results can often be misleading. In this paper, factorial experimentation in simulating railway bridge dynamics was exemplified. A two-level (2n) fractional factorial design was proposed and exemplified to screen the individual and joint effect of several modelling factors on the dynamic response of a specific railway bridge. The statistical theory proved to be relevant and meaningful, easy to implement but still very powerful. The concept of factorial experimentation was believed to provide the FE model updating engineer with important indications of the effects of several possible updating parameters.
Place, publisher, year, edition, pages
2012. Vol. 106, 91-104 p.
Design of experiments (DOE), Factorial experimentation, Sensitivity analysis, FE model updating, Bridge dynamics
IdentifiersURN: urn:nbn:se:kth:diva-11192DOI: 10.1016/j.compstruc.2012.04.008ISI: 000307148900009ScopusID: 2-s2.0-84863794287OAI: oai:DiVA.org:kth-11192DiVA: diva2:241337
QC 201208072009-10-022009-10-022013-01-18Bibliographically approved