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Influence of bar diameter on low-cycle fatigue degradation of reinforcing bars

Research output: Contribution to journalArticle

Original languageEnglish
Article number06019002
Number of pages9
JournalJournal of Materials in Civil Engineering
Issue number4
Early online date31 Jan 2019
DateAccepted/In press - 10 Sep 2018
DateE-pub ahead of print - 31 Jan 2019
DatePublished (current) - Apr 2019


This paper reports the results of 120 low-cycle fatigue tests on steel reinforcing bars with varying slenderness ratios at varying strain amplitudes. The failure modes of the fractured bars were investigated through analysis of the fracture mechanisms of bars. The results of experimental testing were used to update empirical models of low-cycle fatigue life for such bars. The newly improved empirical models were then incorporated into a recently developed constitutive material model that accounts for bar buckling and fatigue. The experimental results show that the size effect is significant for short steel reinforcing bars where there is no buckling. The results also show that as the slenderness ratio of the steel reinforcing bars increases, the influence of the bar diameter on low-cycle fatigue reduces.

    Research areas

  • Inelastic buckling, Low-cycle fatigue, Modeling, Nonlinear analysis, Size effect, Stress-strain behavior

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    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via ASCE at . Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 3.62 MB, PDF document

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    Accepted author manuscript, 6.74 MB, PDF document


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