The Scaled Boundary Finite Element Method for the Efficient Modelling of Linear Elastic Fracture

Egger, Adrian; Triantafyllou, Savvas P.; Chatzi, Eleni

doi:10.21012/fc9.056

Cited by 2 publications

(1 citation statement)

References 30 publications

(35 reference statements)

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“…The SBFEM has the advantage of accurately representing the crack zone’s stress field without needing a more discretized mesh [ 38 , 50 ]. This tool enables the SIFs to be directly calculated from the semi-analytical solutions of the stresses.…”

Section: Scaled Boundary Finite Element (Sbfem)mentioning

confidence: 99%

Modeling Cyclic Crack Propagation in Concrete Using the Scaled Boundary Finite Element Method Coupled with the Cumulative Damage-Plasticity Constitutive Law

et al. 2023

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Many concrete structures, such as bridges and wind turbine towers, fail mostly due to the fatigue rapture and bending, where the cracks are initiated and propagate under cyclic loading. Modeling the fracture process zone (FPZ) is essential to understanding the cracking behavior of heterogeneous, quasi-brittle materials such as concrete under monotonic and cyclic actions. The paper aims to present a numerical modeling approach for simulating crack growth using a scaled boundary finite element model (SBFEM). The cohesive traction law is explored to model the stress field under monotonic and cyclic loading conditions. In doing so, a new constitutive law is applied within the cohesive response. The cyclic damage accumulation during loading and unloading is formulated within the thermodynamic framework of the constitutive concrete model. We consider two common problems of three-point bending of a single-edge-notched concrete beam subjected to different loading conditions to validate the developed method. The simulation results show good agreement with experimental test measurements from the literature. The presented analysis can provide a further understanding of crack growth and damage accumulation within the cohesive response, and the SBFEM makes it possible to identify the fracture behavior of cyclic crack propagation in concrete members.

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Section: Scaled Boundary Finite Element (Sbfem)mentioning

confidence: 99%

Modeling Cyclic Crack Propagation in Concrete Using the Scaled Boundary Finite Element Method Coupled with the Cumulative Damage-Plasticity Constitutive Law

et al. 2023

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A Numerical Study of Crack Mixed Mode Model in Concrete Material Subjected to Cyclic Loading

2023

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In quasi-brittle materials such as concrete, numerical methods are frequently used to simulate the crack propagation for monotonic loading. However, further research and action are required to better understand the fracture properties under cyclic loading. For this purpose, in this study, we present numerical simulations of mixed-mode crack propagation in concrete using the scaled boundary finite element method (SBFEM). The crack propagation is developed based on a cohesive crack approach combined with the thermodynamic framework of a constitutive concrete model. For validation, two benchmark crack-mode examples are modelled under monotonic and cyclic loading conditions. The numerical results are compared against the results from available publications. Our approach revealed good consistency compared to the test measurements from the literature. The damage accumulation parameter was the most influential variable on the load-displacement results. The proposed method can provide a further investigation of crack growth propagation and damage accumulation for cyclic loading within the SBFEM framework.

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The Scaled Boundary Finite Element Method for the Efficient Modelling of Linear Elastic Fracture

Cited by 2 publications

References 30 publications

Modeling Cyclic Crack Propagation in Concrete Using the Scaled Boundary Finite Element Method Coupled with the Cumulative Damage-Plasticity Constitutive Law

Modeling Cyclic Crack Propagation in Concrete Using the Scaled Boundary Finite Element Method Coupled with the Cumulative Damage-Plasticity Constitutive Law

A Numerical Study of Crack Mixed Mode Model in Concrete Material Subjected to Cyclic Loading

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