Numerical and experimental study on flexural behavior of reinforced concrete beams: Digital image correlation approach

B. Murali Krishna; V. Guru Prathap Reddy; T. Tadepalli; P. Rathish Kumar; Yerra Lahir

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자료유형: 학술저널

저자정보: B. Murali Krishna (National Institute of Technology Warangal) V. Guru Prathap Reddy (National Institute of Technology Warangal) T. Tadepalli (National Institute of Technology Warangal) P. Rathish Kumar (National Institute of Technology Warangal) Yerra Lahir (National Institute of Technology Warangal)

저널정보: 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.24 No.6

발행연도: 2019.1

수록면: 561 - 570 (10page)

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연구배경

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🏆

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Understanding the realistic behavior of concrete up to failure under different loading conditions within the framework of damage mechanics and plasticity would lead to an enhanced design of concrete structures. In the present investigation, QR (Quick Response) code based random speckle pattern is used as a non-contact sensor, which is an innovative approach in the field of digital image correlation (DIC). A four-point bending test was performed on RC beams of size 1800 mm x 150 mm x 200 mm. Image processing was done using an open source Ncorr algorithm for the results obtained using random speckle pattern and QR code based random speckle pattern. Load-deflection curves of RC beams were plotted for the results obtained using both contact and non-contact (DIC) sensors, and further, Moment (M)-Curvature (κ) relationship of RC beams was developed. The loading curves obtained were used as input data for material model parameters in finite element analysis. In finite element method (FEM) based software, concrete damage plasticity (CDP) constitutive model is used to predict the realistic nonlinear quasi-static flexural behavior of RC beams for monotonic loading condition. The results obtained using QR code based DIC are observed to be on par with conventional results and FEM results.

#Concrete Damage Plasticity (CDP) #DIC #FEM #Moment-Curvature #QR code

참고문헌 (28)

참고문헌 신청

ABAQUS / 2011 / Theory Manual / Dassault Systemes Simulia Corp

Dimitrios G. Aggelis / 2016 / Monitoring the failure mechanisms of a reinforced concrete beam strengthened by textile reinforced cement using acoustic emission and digital image correlation / Smart Structures and Systems, An International Journal 17(1):91~105

Jakub Antoš / 2017 / ASSESSMENT OF 2D-DIC STOCHASTIC PATTERNS / Acta Polytechnica CTU Proceedings 13(1-10):1

Blaber, J. / 2015 / Ncorr : open-source 2D digital image correlation matlab software / Exper. Mech 55(6):1105~1122

Carter, J. L. / 2015 / Impact of speckle pattern parameters on DIC strain resolution calculated from in-situ SEM experiments / Fract. Fatig. Fail. Damage Evol 5:119~126

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