Sensitivity and Identifiability Study for Uncertainty Analysis of Material Model for Concrete Fatigue

Amol Mankar, Sima Rastayesh, John Dalsgaard Sørensen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Abstract

Concrete is a widely used construction material; however, the understanding of fatigue failure in cementitious material is lacking when compared to ferrous materials. The design life of concrete structures is also evaluated using PM rule of linear damage accumulation where the fatigue strength is represented by a combination of Goodman Diagrams & Wöhler Curves. Concrete is a heterogeneous material, which is inherently full of flaws, and has a considerable scatter in fatigue test data for same test conditions. Therefore, it is desirable to introduce probabilistic concepts to ensure adequate fatigue resistance of concrete structures. This paper attempts to identify the important parameter uncertainties associated with concrete fatigue material models for uniaxial compression based on a large data set of concrete fatigue tests obtained from literature. Parameter estimation from a given dataset of experiments can be done in different ways, and in addition sensitivity and identifiability analyses can be used to search for a unique set of parameters along with their uncertainties.
Original languageEnglish
Title of host publicationIRSEC 2018 International Reliability and Safety Engineering Conference
Number of pages7
PublisherInternational Reliability and Safety Engineering Conference
Publication date2018
Publication statusPublished - 2018
Event5th International Reliability and Safety Engineering Conference - Shiraz University, Shiraz, Iran, Islamic Republic of
Duration: 9 May 201810 May 2018
Conference number: 5

Conference

Conference5th International Reliability and Safety Engineering Conference
Number5
LocationShiraz University
Country/TerritoryIran, Islamic Republic of
CityShiraz
Period09/05/201810/05/2018

Bibliographical note

Acknowledgements
The project INFRASTAR (infrastar.eu) has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 676139. The grant is gratefully acknowledged.

Keywords

  • Identifiability
  • Sensitivity
  • Concrete
  • Fatigue
  • Uncertainty
  • Reliability

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