Numerical Analysis of Multiple Cracks in Concrete Using the Discrete Approach

Shi, Zihai; Ohtsu, Masayasu; Suzuki, Masaki; Hibino, Yoshihisa

doi:10.1061/(asce)0733-9445(2001)127:9(1085)

Cited by 39 publications

(22 citation statements)

References 5 publications

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“…When such a mode is found to be unrealistic, it will eventually be replaced by other modes as a result of readjusting the tip positions of certain cracks. The validity of this approach in searching for the true cracking mode based on the minimum load criterion has been verified with several structural problems involving multiple cracks (Shi et al 2001(Shi et al , 2003.…”

Section: Cracking Modesmentioning

confidence: 91%

“…To cope with curvilinear crack propagation, a re-meshing scheme is employed (Shi et al 2003). For details of the computation, refer to the previous publication (Shi et al 2001).…”

Section: (A)-(d)mentioning

confidence: 99%

“…analysis of plain concrete beams, tunnel linings and concrete gravity dams with a reasonable number of cracks can be carried out as reported previously (Shi et al 2001(Shi et al , 2003, without a major computational burden.…”

Section: (A)-(d)mentioning

confidence: 99%

“…Based on the extended fictitious crack model (Shi et al 2001) that has been developed recently from the original model of Hillerborg et al (1976), this paper presents a numerical analysis of fracture modes in a plain concrete beam with multiple cracks, focusing on crack interaction and localization. The round-robin tests of un-notched plain concrete beams under four-point bending (Uchida et al 1993) are analyzed.…”

Section: Introductionmentioning

confidence: 99%

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Discrete Modeling of Crack Interaction and Localization in Concrete Beams with Multiple Cracks

Shi

Suzuki

Ohtsu³

2004

ACT

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This paper presents a numerical analysis of fracture modes in a plain concrete beam with multiple discrete cracks, focusing on crack interaction and localization. It contains three parts: justification of the strategy used to solve multiple-crack problems using a discrete approach, derivation of the coefficient of interaction, and numerical studies. The coefficient of interaction is defined based on the nodal force components at the tip of a crack, and its usefulness in analyzing various cracking behaviors is demonstrated through numerical studies. Under the given loading conditions, the cracking behavior of the plain concrete beam is shown to depend on the initial configuration of notches and their sizes. It is found that the intensity of crack interaction and its effect on crack localization can vary. As the crack localization progresses, the stress concentration at the dominant crack intensifies, and the crack interaction diminishes quickly.

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Section: Cracking Modesmentioning

confidence: 91%

“…To cope with curvilinear crack propagation, a re-meshing scheme is employed (Shi et al 2003). For details of the computation, refer to the previous publication (Shi et al 2001).…”

Section: (A)-(d)mentioning

confidence: 99%

Section: (A)-(d)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Discrete Modeling of Crack Interaction and Localization in Concrete Beams with Multiple Cracks

Shi

Suzuki

Ohtsu³

2004

ACT

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“…A single-active-crack modes strategy is used to simulate multiple-cracks as proposed by Shi et al [38].…”

Section: Computer Implementationmentioning

confidence: 99%

Fracture mechanic modeling of fiber reinforced polymer shear-strengthened reinforced concrete beam

Shahbazpanahi

Ali

Kamgar

et al. 2015

Composites Part B: Engineering

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a b s t r a c tA numerical method is developed to model shear-strengthening of reinforced concrete beam by using fiber reinforced polymer (FRP) composites. Tensile crack is simulated by a non-linear spring element with softening behavior ahead of the crack tip to model the cohesive zone in concrete. A truss element is used, parallel to the spring element, to simulate the energy dissipation rate by the FRP. The strain energy release rate is calculated directly by using a virtual crack closure technique. It is observed that the length of the fracture process zone (FPZ) increases with the application of FRP shear-strengthening. The present model shows that the main diagonal crack is formed at the support in the control beam while it appears through the shear span in the shear-strengthened beam. Another important observation is that the load capacity increases with the number of CFRP sheets in the shear span.

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Experimental and Numerical Studies on Multistage Strength Degradation in Notched Concrete Beams Under Repeated Loads: A Review

Nakano¹,

Shi²,

Nakamura³

et al. 2014

Fatigue of Materials III Advances and Emergences in Understanding

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Numerical Analysis of Multiple Cracks in Concrete Using the Discrete Approach

Cited by 39 publications

References 5 publications

Discrete Modeling of Crack Interaction and Localization in Concrete Beams with Multiple Cracks

Discrete Modeling of Crack Interaction and Localization in Concrete Beams with Multiple Cracks

Fracture mechanic modeling of fiber reinforced polymer shear-strengthened reinforced concrete beam

Experimental and Numerical Studies on Multistage Strength Degradation in Notched Concrete Beams Under Repeated Loads: A Review

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