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    Influence of Bar Diameter on Low-Cycle Fatigue Degradation of Reinforcing Bars

    Source: Journal of Materials in Civil Engineering:;2019:;Volume ( 031 ):;issue: 004
    Author:
    Mohammad M. Kashani; Shunyao Cai; Sean A. Davis; Paul J. Vardanega
    DOI: 10.1061/(ASCE)MT.1943-5533.0002637
    Publisher: American Society of Civil Engineers
    Abstract: 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.
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      Influence of Bar Diameter on Low-Cycle Fatigue Degradation of Reinforcing Bars

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    contributor authorMohammad M. Kashani; Shunyao Cai; Sean A. Davis; Paul J. Vardanega
    date accessioned2019-03-10T12:21:28Z
    date available2019-03-10T12:21:28Z
    date issued2019
    identifier other%28ASCE%29MT.1943-5533.0002637.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4255373
    description abstractThis 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.
    publisherAmerican Society of Civil Engineers
    titleInfluence of Bar Diameter on Low-Cycle Fatigue Degradation of Reinforcing Bars
    typeJournal Paper
    journal volume31
    journal issue4
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0002637
    page06019002
    treeJournal of Materials in Civil Engineering:;2019:;Volume ( 031 ):;issue: 004
    contenttypeFulltext
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