Titill: | Uniaxial and lateral strain behavior of ribbed reinforcement bars inspected with digital image correlation |
Höfundur: |
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Útgáfa: | 2018-05-30 |
Tungumál: | Enska |
Umfang: | 1992-2003 |
Háskóli/Stofnun: | Háskóli Íslands (HÍ) University of Iceland (UI) |
Svið: | School of Engineering and Natural Sciences (UI) Verkfræði- og náttúruvísindasvið (HÍ) |
Deild: | Umhverfis- og byggingarverkfræðideild (HÍ) Faculty of Civil and Environmental Engineering (UI) Faculty of Industrial Eng., Mechanical Eng. and Computer Science (UI) Iðnaðarverkfræði-, vélaverkfræði- og tölvunarfræðideild (HÍ) |
Birtist í: | Structural Concrete;19(6) |
ISSN: | 1464-4177 1751-7648 (eISSN) |
DOI: | 10.1002/suco.201800042 |
Efnisorð: | DIC; Experimental observation; Gauge lengths; Lateral strain; Lüder's behavior; Necking; Poisson's ratio; Ribbed reinforcement bars; Stress–strain curves; Byggingarverkfræði; Burðarþol |
URI: | https://hdl.handle.net/20.500.11815/1372 |
Tilvitnun:Eiriksson, HJ, Bessason, B, Unnthorsson, R. Uniaxial and lateral strain behavior of ribbed reinforcement bars inspected with digital image correlation. Structural Concrete. 2018; 19: 1992– 2003. https://doi.org/10.1002/suco.201800042
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Útdráttur:Knowledge about the plastic behavior of reinforcement steel bars in reinforced concrete (RC) structures is important, especially for seismic design. This paper presents the results of experimental tests where the main aim was to map the plastic deformations of long ribbed reinforcement bars, both in the axial and lateral directions, in order to provide useful information about the behavior of reinforcement bars inside concrete. The study showed that the digital image correlation (DIC) technique is very suitable for this kind of tests. The uniaxial stress–strain curves for side‐by‐side and different gauge lengths (1d, 3d, 5d, 10d) were identical all the way to the max stress, but after that the segment including the neck dominated the strain development. The Poisson's ratio increased rapidly during the yielding phase to 0.44–0.49 and was constant all the way to rupture. The location of the neck could be predicted at the end of the yielding phase.
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Athugasemdir:Publisher's version (útgefin grein)
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Leyfi:This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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