Modeling tensile crack propagation in concrete gravity dams via crack-path-field and strain injection techniques

Dias, I. F.; Oliver, J.; Lemos, José V.; Lloberas-Valls, Oriol

doi:10.1016/j.engfracmech.2015.12.028

Cited by 42 publications

(25 citation statements)

References 46 publications

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“…The crack-path-field algorithm is used in the last part of a kinematic enhancement series employed for the mesh-objective localization of fracture. The first kinematic enhancement is applied to elements in which material bifurcation is about to occur [150] or has already occurred [149,200]. This enhancement provides a better approximation of field α h in potential locations of strain localization.…”

Section: Algorithms Based On An Underlying Damage-related Fieldmentioning

confidence: 99%

“…Then, at an apriori defined stage of the localisation process, a strong discontinuity is inserted at the aforementioned elements that are already enhanced in a weak manner and are crossed by the zero level set of the crack-path-field Γ . The algorithm has been used in two-dimensional simulations of quasi-static [149,203,200] and dynamic crack propagation [150].…”

Section: Algorithms Based On An Underlying Damage-related Fieldmentioning

confidence: 99%

“…One dimensional illustration of the strain localization field α h and its directional derivative ψ h (left) and the crackpath-field Γ as the zero level of µ h , which is the continuous approximation of ψ h (right). (Image from Dias et al[200]). …”

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confidence: 99%

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Challenges, Tools and Applications of Tracking Algorithms in the Numerical Modelling of Cracks in Concrete and Masonry Structures

Saloustros

Cervera

Pelà

2018

Arch Computat Methods Eng

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The importance of crack propagation in the structural behaviour of concrete and masonry structures has led to the development of a wide range of finite element methods for crack simulation. A common standpoint in many of them is the use of tracking algorithms, which identify and designate the location of cracks within the analysed structure. In this way, the crack modelling techniques, smeared or discrete, are applied only to a restricted part of the discretized domain.This paper presents a review of finite element approaches to cracking focusing on the development and use of tracking algorithms. These are presented in four categories according to the information necessary for the definition and storage of the crack-path. In addition to that, the most utilised criteria for the selection of the crack propagation direction are summarized.The various algorithmic issues involved in the development of a tracking algorithm are discussed through the presentation of a local tracking algorithm based on the smeared crack approach. Challenges such as the modelling of arbitrary and multiple cracks propagating towards more than one direction, as well as multidirectional and intersecting cracking, are detailed. The presented numerical model is applied to the analysis of small-and large-scale masonry and concrete structures under monotonic and cyclic loading.

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Section: Algorithms Based On An Underlying Damage-related Fieldmentioning

confidence: 99%

Section: Algorithms Based On An Underlying Damage-related Fieldmentioning

confidence: 99%

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Challenges, Tools and Applications of Tracking Algorithms in the Numerical Modelling of Cracks in Concrete and Masonry Structures

Saloustros

Cervera

Pelà

2018

Arch Computat Methods Eng

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“…Fatigue problems are prevalent in the service life of concrete structures such as bridge slabs, highway pavements and offshore structures [1][2][3]. Concrete lies in the category of quasi-brittle material and it is microscopically heterogeneous.…”

Section: Introductionmentioning

confidence: 99%

Microscopic Multiple Fatigue Crack Simulation and Macroscopic Damage Evolution of Concrete Beam

Tang

et al. 2019

Applied Sciences

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Microcracks in concrete can coalesce into larger cracks that further propagate under repetitive load cycles. Complex process of crack formation and growth are essentially involved in the failure mechanism of concrete. Understanding the crack formation and propagation is one of the core issues in fatigue damage evaluation of concrete materials and components. In this regard, a numerical model was formulated to simulate the thorough failure process, ranging from microcracks growth, crack coalescence, macrocrack formation and propagation, to the final rupture. This model is applied to simulate the fatigue rupture of three-point bending concrete beams at different stress levels. Numerical results are qualitatively consistent with the experimental observations published in literature. Furthermore, in the framework of damage mechanics, one damage variable is defined to reflect stiffness reduction caused by fatigue loading. S-N curve is subsequently computed and the macroscopic damage evolution of concrete beams are achieved. By employing the combined approaches of fracture mechanics and damage mechanics, made possible is the damage evolution of concrete beam as well as the microscopic multiple fatigue crack simulation. The proposed approach has the potential to be applied to the fatigue life assessment of materials and components at various scales in engineering practice.

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“…[4,23]) which has already been utilized for the study of fracture in quasi-brittle materials and successfully applied to the study of tensile crack growth in gravity dams (cf. [5,6]). The specific formulation developed by Oliver et al [24] and assessed for quasi-static multiscale fracture problems has been adopted and tailored for dynamic fracture propagation problems.…”

Section: Introductionmentioning

confidence: 99%

Crack Path Field and Strain Injection Techniques in Dynamic Fracture Simulations

Lloberas-Valls¹,

Huespe²,

Oliver³

et al. 2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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Abstract. Dynamic fracture phenomena are studied employing low cost computational tools based on Finite Elements with Embedded strong discontinuities (E-FEM). Fracture nucleation and propagation are accounted for through the injection of discontinuous strain and displacement modes inside the finite elements. The Crack Path Field technique is employed to compute the trace of the strong discontinuity during fracture propagation.Unstable crack propagation and crack branching are observed upon increasing loading rates. The variation in terms of crack pattern and energy dissipation is studied and a good correlation is found between the maximum experimental crack speed and maximum dissipation at the onset of branching. Comparable results are obtained against simulations employing supraelemental techniques, such as phase-field and gradient damage models, considering coarser discretizations which can differ by two orders of magnitude.

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Modeling tensile crack propagation in concrete gravity dams via crack-path-field and strain injection techniques

Cited by 42 publications

References 46 publications

Challenges, Tools and Applications of Tracking Algorithms in the Numerical Modelling of Cracks in Concrete and Masonry Structures

Challenges, Tools and Applications of Tracking Algorithms in the Numerical Modelling of Cracks in Concrete and Masonry Structures

Microscopic Multiple Fatigue Crack Simulation and Macroscopic Damage Evolution of Concrete Beam

Crack Path Field and Strain Injection Techniques in Dynamic Fracture Simulations

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