Determining concrete fracture parameters using three-point bending beams with various specimen spans

Yin, Yangyang; Yu, Qiao; Hu, Shaowei

doi:10.1016/j.tafmec.2019.102465

Cited by 47 publications

(8 citation statements)

References 76 publications

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“…To initiate a discontinuity among the damaged elements to represent a crack, the Heaviside function H(x) is employed as expressed in Equation (14).…”

Section: Extended Finite Element Methods Techniquementioning

confidence: 99%

“…According to the experimental work done by Yin et al [ 14 ], a three-point-bending test was carried out, as indicated in Figure 1 . This test was conducted on six series of notched plain concrete beams having different S/D ratios.…”

Section: Synopsis Of Experimental Datamentioning

confidence: 99%

“…A value of 0.06 N/mm was adopted for

[ 14 ]. Based on the mesh sensitivity study, a fine mesh of reduced integration continuum 8-node biquadratic plane stress elements (CPS8R) was used for the VCCT models.…”

Section: Evolution Of the Numerical Fe Modelsmentioning

confidence: 99%

“…It was deduced that both VCCT and XFEM can capture the softening regime for concrete fracture well. An experimental work achieved by Yin et al [ 14 ] was conducted on notched plain concrete beams having different spans. The experimental scope was set to determine the effect of changing the span on different concrete fracture parameters.…”

Section: Introductionmentioning

confidence: 99%

“…The current study utilizes the experimental work conducted by Yin et al [ 14 ]. The current work aims to study the flexural behavior and fracture initiation and propagation of notched plain and reinforced concrete beams.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear ABAQUS Simulations for Notched Concrete Beams

2021

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The numerical simulation of concrete fracture is difficult because of the brittle, inelastic-nonlinear nature of concrete. In this study, notched plain and reinforced concrete beams were investigated numerically to study their flexural response using different crack simulation techniques in ABAQUS. The flexural response was expressed by hardening and softening regime, flexural capacity, failure ductility, damage initiation and propagation, fracture energy, crack path, and crack mouth opening displacement. The employed techniques were the contour integral technique (CIT), the extended finite element method (XFEM), and the virtual crack closure technique (VCCT). A parametric study regarding the initial notch-to-depth ratio (ao/D), the shear span-to-depth ratio (S.S/D), and external post-tensioning (EPT) were investigated. It was found that both XFEM and VCCT produced better results, but XFEM had better flexural simulation. Contrarily, the CIT models failed to express the softening behavior and to capture the crack path. Furthermore, the flexural capacity was increased after reducing the (ao/D) and after decreasing the S.S/D. Additionally, using EPT increased the flexural capacity, showed the ductile flexural response, and reduced the flexural softening. Moreover, using reinforcement led to more ductile behavior, controlled damage propagation, and a dramatic increase in the flexural capacity. Furthermore, CIT showed reliable results for reinforced concrete beams, unlike plain concrete beams.

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“…To initiate a discontinuity among the damaged elements to represent a crack, the Heaviside function H(x) is employed as expressed in Equation (14).…”

Section: Extended Finite Element Methods Techniquementioning

confidence: 99%

Section: Synopsis Of Experimental Datamentioning

confidence: 99%

“…A value of 0.06 N/mm was adopted for

[ 14 ]. Based on the mesh sensitivity study, a fine mesh of reduced integration continuum 8-node biquadratic plane stress elements (CPS8R) was used for the VCCT models.…”

Section: Evolution Of the Numerical Fe Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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