A crack-tracking technique for localized cohesive-frictional damage
This paper extends the use of crack-tracking techniques within the smeared crack approach for the numerical simulation of cohesive-frictional damage on quasi-brittle materials. The mechanical behaviour is described by an isotropic damage model with a Mohr-Coulomb failure surface. The correct crack p...
| Authors: | , , |
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| Format: | article |
| Publication Date: | 2015 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | Catalan |
| OAI Identifier: | oai:upcommons.upc.edu:2117/86670 |
| Online Access: | https://hdl.handle.net/2117/86670 https://dx.doi.org/10.1016/j.engfracmech.2015.10.039 |
| Access Level: | Open access |
| Keyword: | Fracture mechanics Continuum damage model Crack-propagation Cracking Strain localization Mohr-Coulomb QUASI-BRITTLE MATERIALS FINITE-ELEMENT-METHOD MATERIAL FAILURE X-FEM CONCRETE FRACTURE PROPAGATION PLASTICITY STRESS GROWTH Mecànica de fractura Àrees temàtiques de la UPC::Enginyeria civil::Geologia |
| Summary: | This paper extends the use of crack-tracking techniques within the smeared crack approach for the numerical simulation of cohesive-frictional damage on quasi-brittle materials. The mechanical behaviour is described by an isotropic damage model with a Mohr-Coulomb failure surface. The correct crack propagation among the two alternative fracture planes proposed by the Mohr-Coulomb theory is selected with the use of an energy criterion based on the total elastic strain energy. The simulation of three benchmark problems of mixed-mode fracture in concrete demonstrates that the proposed methodology can reproduce the material's frictional characteristics, showing robustness, as well as mesh-size and mesh-bias independence. (C) 2015 Elsevier Ltd. All rights reserved. |
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