Fracture Process Zone of Concrete

Kobayashi, A. S.; Hawkins, Neil M.; Barker, Donald E.; Liaw, B. M.

doi:10.1007/978-94-009-5121-1_2

Cited by 29 publications

(11 citation statements)

References 9 publications

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“…The results of the numerical simulations obtained with the two meshes are plotted in Figure 14 in terms of applied load F 2 and crack mouth opening displacement (CMOD). The results are compared with the experimental data reported in Reference 57 and with the numerical results obtained by the embedded discontinuity finite element formulation and by the XFEM formulation in Reference 17.…”

Section: Numerical Simulationmentioning

confidence: 98%

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Hybrid equilibrium element with interelement interface for the analysis of delamination and crack propagation problems

Parrinello

2020

Numerical Meth Engineering

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This article proposes a formulation for the analysis of delamination and fracture propagation problems at the interelement interface, with perfect adhesion at the pre-failure condition and with linear softening at the post-failure regime. The proposed formulation is based on the hybrid equilibrium element (HEE) model, with stress fields which strongly verify the homogeneous equilibrium equations and interelement equilibrium equations. The HEE can easily model high-order stress fields and can implicitly model the initially rigid behavior of an extrinsic interface at the element sides. The interface model is defined as a function of the same degrees of freedom of the HEE (generalized stresses) and the preand post-failure behavior of the interface can be modeled without any additional degree of freedom. The proposed formulation is developed for a nine-node triangular HEE with quadratic stress fields. This article also proposes an extrinsic cohesive model, rigorously developed in the damage mechanics framework.

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Section: Numerical Simulationmentioning

confidence: 98%

“…The experimental test is reported in Reference 57 and is also analyzed in Reference 58 by smeared crack analysis, and in References 17 and 59 by strong discontinuity approaches. Geometry and load setting of the experimental test are represented in Figure 13A, with the plate thickness 50.8 mm.…”

Section: Numerical Simulationmentioning

confidence: 99%

Hybrid equilibrium element with interelement interface for the analysis of delamination and crack propagation problems

Parrinello

2020

Numerical Meth Engineering

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“…It is a notched specimen whose experimental testing is reported in Reference [27]. The couples of forces F 1 and F 2 are progressively applied, as it is indicated, in Figure 5(b) in order to induce a mixed mode crack which develops from the notch tip with an inclination angle of 71…”

Section: Notched Specimenmentioning

confidence: 99%

A study on finite elements for capturing strong discontinuities

Oliver

Huespe

Samaniego

2003

Numerical Meth Engineering

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SUMMARYThe work focuses on the presently existing families of ÿnite elements with embedded discontinuities and explores the possibilities of obtaining symmetric statically consistent ÿnite elements that alleviate the stress-locking problem. For this purpose, mixed (reduced integration) and assumed enhanced strain techniques are applied to the basic symmetric four-noded element. Numerical simulations show the e ectiveness of the proposed measures.

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“…FPZ is closely related to the propagation of cracks, and the primary cause of the nonlinear fracture process of concrete. The evaluation of FPZ becomes critical in deciding the applicability of linear fracture mechanics [ 5 , 6 , 7 ]. The size of FPZ has significance for studying the mechanism and characteristics of concrete fracture.…”

Section: Introductionmentioning

confidence: 99%

Mixed-Mode I-II Fracture Process Zone Characteristic of the Four-Point Shearing Concrete Beam

Ren

2020

Materials

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The size of the fracture process zone (FPZ) has significance for studying the fracture mechanism and fracture characteristics of concrete. This paper presents the method of assessing the FPZ of Mixed-Mode I-II for quasi-static four-point shearing concrete beams with pre-notched by Lagrangian strain profiles from digital image correlation (DIC). Additionally, it explores the influences of volume rates of the coarse aggregate of 0%, 28%, 48%, and 68%, and the specific surface areas of 0.12 m2/kg, 0.15 m2/kg, and 0.26 m2/kg on the size of the FPZ. It shows that the size of FPZ in four-point shearing concrete beam can be characterized by the displacement field and strain field using DIC. The size of FPZ conforms to linear positive correlation with the volume rate of coarse aggregate, and linear negative correlation with the specific surface area of coarse aggregate. It presents that the crack initiation of the four-point shearing beam with the pre notch is dominated by mode I load, and the propagation and fracture of Mixed-Mode I-II cracks are caused by the combined effect of Mode I and Mode II loading.

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Fracture Process Zone of Concrete

Cited by 29 publications

References 9 publications

Hybrid equilibrium element with interelement interface for the analysis of delamination and crack propagation problems

Hybrid equilibrium element with interelement interface for the analysis of delamination and crack propagation problems

A study on finite elements for capturing strong discontinuities

Mixed-Mode I-II Fracture Process Zone Characteristic of the Four-Point Shearing Concrete Beam

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