Finite Element Modeling of Existing Cracks on Pre-loaded Reinforced Concrete Beams

Sümer, Yusuf; Aktaş, Muharrem

doi:10.1007/s13369-013-0925-2

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…This was calculated as a ratio of the total external energy supply ( G f ) per unit area required to initiate cracking in the concrete. This approach was suggested in a previous study (Sümer and Aktaş, ).…”

Section: Numerical Simulation (Materials Properties and Constitutive Mmentioning

confidence: 99%

The effects of CFRP orientation on the strengthening of reinforced concrete structures

Lima

Doh

Hadi

et al. 2016

Struct. Design Tall Spec. Build.

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In recent years, the strengthening and retrofitting of structural members using externally bonded carbon fibre reinforced polymer (CFRP) materials has gained a great deal of attention. This has eventuated from the superior properties of composite materials, including high elastic modulus, higher strengths and lighter weights. This paper presents a finite element analysis that has been validated against laboratory tests of two reinforced concrete (RC) beams, two columns, two slabs and six walls. The main focus is on the ultimate failure load of these members as they have different CFRP orientations to the loading direction. The analysis result shows a sound agreement with the experimental data regarding the ultimate failure load of RC samples, except for the RC wall. In fact, the RC wall, while under eccentric axial load, confirmed that the CFRP orientation was parallel to the loading direction, and it proved to be an insignificant contribution in the ultimate failure load of the samples. This finding demonstrates that more experiments should be considered when investigating the influence of CFRP on the ultimate strength of strengthened RC walls.

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Section: Numerical Simulation (Materials Properties and Constitutive Mmentioning

confidence: 99%

The effects of CFRP orientation on the strengthening of reinforced concrete structures

Lima

Doh

Hadi

et al. 2016

Struct. Design Tall Spec. Build.

View full text Add to dashboard Cite

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“…Many scholars have used the numerical simulation method (RFPA, PFC, and FLAC3D) to study the fracture mechanism of the fissured rock mass, which helps to understand the stress state and provides a powerful criterion for the initiation and propagation of cracks [10][11][12][13][14][15][16][17][18][19][20].…”

Section: Methodologiesmentioning

confidence: 99%

“…It is a finite element code developed and verified for simulating coupled fracturing processes in a complex geological condition, which were set in 3D subjected to the affecting hydraulic and thermal factors for simulating coupled crustal dynamics [24,25]. The related equations used in this study are briefly listed below [5,11,[26][27][28][29].…”

Section: Methodologiesmentioning

confidence: 99%

“…At the same time, the high temperature and included angle of preexisting cracks had been experimentally studied to observe macroscopic cracks emanating from the flaws [8,9]. Moreover, several numerical studies were conducted to explain better the fracturing processes in precracked models, including the finite element methods (FEM) [10][11][12], boundary element methods (BEM), and displacement discontinuity methods (DDM) [13]. To model the crack behaviors reasonably, appropriate cracking criteria need to be incorporated [14].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Cracking Behavior of Precracked Rock under Mechanical-Hydraulic Loading

Zhong

et al. 2020

Geofluids

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The cracking behavior of precracked rocks under mechanical-hydraulic loading is of great significance in underground openings or petroleum engineering. In this study, an advanced in-house finite element code PANDAS proved to be effective in simulating coupled fracturing processes under complex geological conditions was used to simulate the cracking propagation of the precracked rocks under mechanical loading and mechanical-hydraulic loading with different strength parameters. The simulation results demonstrated that (1) the cracks initiate by the induced stresses, and multiple types of tensile cracks originate from the preexisting flaws; (2) crack propagation patterns under mechanical-hydraulic loading were studied with different strength parameters, and the multiple patterns of pure tensile, main tensile, tensile-shear, main shear, and pure shear were observed; and (3) the timing of hydraulic loading has a significant impact on the fracturing process: when hydraulic loading was carried out in the phase of main crack propagation, the tensile fracture was promoted and the shear fracture was inhibited; when hydraulic loading was carried out in the phase of shear crack propagation, the shear fracture and tensile fracture were stimulated. The numerical simulation results are in good agreement with the experimental results by previous studies. The research on the cracking behavior of precracked rocks under mechanical and hydraulic loading will expand the application prospect in the fields of coal seam gas reservoir and tunnel water inrush.

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Nonlinear Finite Element Modeling of Composite Bridge Girders Strengthened with HM-CFRP Laminates

et al. 2015

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Finite Element Modeling of Existing Cracks on Pre-loaded Reinforced Concrete Beams

Cited by 4 publications

References 15 publications

The effects of CFRP orientation on the strengthening of reinforced concrete structures

The effects of CFRP orientation on the strengthening of reinforced concrete structures

Numerical Simulation of Cracking Behavior of Precracked Rock under Mechanical-Hydraulic Loading

Nonlinear Finite Element Modeling of Composite Bridge Girders Strengthened with HM-CFRP Laminates

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