Sensitivity analysis of limit states in civil engineering: From model outputs to reliability assessment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F23%3APU150540" target="_blank" >RIV/00216305:26110/23:PU150540 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.aip.org/aip/acp/article/2928/1/150006/2913242/Sensitivity-analysis-of-limit-states-in-civil" target="_blank" >https://pubs.aip.org/aip/acp/article/2928/1/150006/2913242/Sensitivity-analysis-of-limit-states-in-civil</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0170597" target="_blank" >10.1063/5.0170597</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sensitivity analysis of limit states in civil engineering: From model outputs to reliability assessment

Popis výsledku v původním jazyce

Sensitivity analysis is a tool for measuring how the conclusion drawn from a model depends on changes in the parameters that enter it. Research on probabilistic reliability analysis in engineering disciplines shows that simply focusing on the model output is not sufficient. In stochastic models, the correlation between input and output, output variance analysis and other methods oriented only to model output are not directly related to reliability, which is one of the main objectives of structural design. The presented article provides a brief history on the development of sensitivity analysis methods, starting with methods oriented to model outputs and ending with the global sensitivity analysis of reliability oriented to the probability of failure or design quantiles. In the next part of the article, a case study examining the influence of loading, material and geometric characteristics on the probability of failure of a steel bar with a thin-walled closed cross-section subjected to torsion is presented. Sensitivity analysis is performed using two sensitivity measures that measure changes in the probability of failure due to changes in input variables. There are large differences between the proportion of first-order and higher-order sensitivity indices. Although the results of the sensitivity analysis are not the same, both sensitivity measures give similar values of total sensitivity indices and infer the same sensitivity ranking of the input variables.

Název v anglickém jazyce

Sensitivity analysis of limit states in civil engineering: From model outputs to reliability assessment

Popis výsledku anglicky

Sensitivity analysis is a tool for measuring how the conclusion drawn from a model depends on changes in the parameters that enter it. Research on probabilistic reliability analysis in engineering disciplines shows that simply focusing on the model output is not sufficient. In stochastic models, the correlation between input and output, output variance analysis and other methods oriented only to model output are not directly related to reliability, which is one of the main objectives of structural design. The presented article provides a brief history on the development of sensitivity analysis methods, starting with methods oriented to model outputs and ending with the global sensitivity analysis of reliability oriented to the probability of failure or design quantiles. In the next part of the article, a case study examining the influence of loading, material and geometric characteristics on the probability of failure of a steel bar with a thin-walled closed cross-section subjected to torsion is presented. Sensitivity analysis is performed using two sensitivity measures that measure changes in the probability of failure due to changes in input variables. There are large differences between the proportion of first-order and higher-order sensitivity indices. Although the results of the sensitivity analysis are not the same, both sensitivity measures give similar values of total sensitivity indices and infer the same sensitivity ranking of the input variables.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA20-01734S" target="_blank" >GA20-01734S: Pravděpodobnostně orientovaná globální citlivostní měření konstrukční spolehlivosti</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium - WMCAUS 2022

ISBN

—

ISSN

1551-7616

e-ISSN

—

Počet stran výsledku

8

Strana od-do

„150006-1“-„150006-8“

Název nakladatele

AIP Publishing

Místo vydání

neuveden

Místo konání akce

Praha

Datum konání akce

5. 9. 2022

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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