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

Influence of bar diameter on low-cycle fatigue degradation of reinforcing bars
Influence of bar diameter on low-cycle fatigue degradation of reinforcing bars
This note 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 fractured 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, which 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.
0899-1561
1-9
Kashani, Mohammad
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Cai, Shunyao
8e4657a9-335e-4702-ba57-e03dff8ee1c0
Davis, Sean A.
b4bf65bc-72be-437f-a711-d6dafad5f3d1
Vardanega, Paul
d99630e2-75c5-472c-9f16-6377c8c76a3e
Kashani, Mohammad
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Cai, Shunyao
8e4657a9-335e-4702-ba57-e03dff8ee1c0
Davis, Sean A.
b4bf65bc-72be-437f-a711-d6dafad5f3d1
Vardanega, Paul
d99630e2-75c5-472c-9f16-6377c8c76a3e

Kashani, Mohammad, Cai, Shunyao, Davis, Sean A. and Vardanega, Paul (2019) Influence of bar diameter on low-cycle fatigue degradation of reinforcing bars. Journal of Materials in Civil Engineering, 31 (4), 1-9. (doi:10.1061/(ASCE)MT.1943-5533.0002637).

Record type: Article

Abstract

This note 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 fractured 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, which 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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JMCE author version 2018-09-10 - Accepted Manuscript
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More information

Accepted/In Press date: 7 September 2018
e-pub ahead of print date: 19 January 2019
Published date: April 2019

Identifiers

Local EPrints ID: 426405
URI: https://eprints.soton.ac.uk/id/eprint/426405
ISSN: 0899-1561
PURE UUID: bf59e6e2-01ee-424e-b32d-dd898fe21922
ORCID for Mohammad Kashani: ORCID iD orcid.org/0000-0003-0008-0007

Catalogue record

Date deposited: 27 Nov 2018 17:30
Last modified: 09 May 2019 04:01

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