- Title
- Modelling multiple cohesive crack propagation using a finite element-scaled boundary finite element coupled method
- Creator
- Ooi, Ean Tat; Yang, Zhenjun
- Date
- 2009
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/103357
- Identifier
- vital:10922
- Identifier
-
https://doi.org/10.1016/j.enganabound.2009.01.006
- Identifier
- ISBN:09557997
- Abstract
- This paper presents an extension of the recently-developed finite element-scaled boundary finite element (FEM-SBFEM) coupled method to model multiple crack propagation in concrete. The concrete bulk and fracture process zones are modelled using SBFEM and nonlinear cohesive interface finite elements (CIEs), respectively. The CIEs are automatically inserted into the SBFEM mesh as the cracks propagate. The algorithm previously devised for single crack propagation is augmented to model problems with multiple cracks and to allow cracks to initiate in an un-cracked SBFEM mesh. It also addresses crack propagation from one subdomain into another, as a result of partitioning a coarse SBFEM mesh, required for some mixed-mode problems. Each crack in the SBFEM mesh propagates when the sign of the Mode-I stress intensity factor at the crack tip turns positive from negative. Its propagation angle is determined using linear elastic fracture mechanics criteria. Three concrete beams involving multiple crack propagation are modelled. The predicted crack propagation patterns and load-displacement curves are in good agreement with data reported in literature. © 2009 Elsevier Ltd. All rights reserved.
- Relation
- Engineering Analysis with Boundary Elements Vol. 33, no. 7 (2009), p. 915-929
- Rights
- © 2009 Elsevier Ltd.
- Rights
- This metadata is freely available under a CCO license
- Subject
- Cohesive crack model; Local arc-length method; Multiple crack propagation; Scaled boundary finite element method; Cohesive interfaces; Concrete beams; Coupled methods; Crack-tip; Finite elements; Fracture process zones; Linear elastic fracture mechanics; Load-displacement curves; Mixed modes; Model problems; Multiple cracks; Propagation angles; Propagation patterns; Stress intensities; Sub domains; Boundary element method; Brittle fracture; Carbon dioxide arc welding; Cavity resonators; Concrete beams and girders; Concrete products; Concretes; Coupled circuits; Crack detection; Crack propagation; Crack tips; Graphic methods; Strength of materials; Finite element method
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