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

authored by
Omar Alrayes, Carsten Könke, Ean Tat Ooi, Khader M. Hamdia
Abstract

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.

Organisation(s)
Institute of Continuum Mechanics
External Organisation(s)
Bauhaus-Universität Weimar
Federation University Australia
Type
Article
Journal
MATERIALS
Volume
16
ISSN
1996-1944
Publication date
16.01.2023
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Condensed Matter Physics, Materials Science(all)
Electronic version(s)
https://doi.org/10.3390/ma16020863 (Access: Open)
 

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