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A bond model for DEM simulation of cementitious materials and deformable structures
- Source :
- Brown, N J, Chen, J F & Ooi, J Y 2014, ' A bond model for DEM simulation of cementitious materials and deformable structures ', Granular Matter, vol. 16, no. 3, pp. 299-311 . https://doi.org/10.1007/s10035-014-0494-4
- Publication Year :
- 2014
- Publisher :
- Springer Science and Business Media LLC, 2014.
-
Abstract
- There is an increasing use of the discrete element method (DEM) to study cemented (e.g. concrete and rocks) and sintered particulate materials. The chief advantage of the DEM over continuum based techniques is that it does not make assumptions about how cracking and fragmentation initiate and propagate, since the DEM system is naturally discontinuous. The ability for the DEM to produce a realistic representation of a cemented granular material depends largely on the implementation of an inter-particle bonded contact model. This paper presents a new bonded contact model based on the Timoshenko beam theory which considers axial, shear and bending behaviour of the bond. The bond model was first verified by simulating both the bending and dynamic response of a simply supported beam. The loading response of a concrete cylinder was then investigated and compared with the Eurocode equation prediction. The results show significant potential for the new model to produce satisfactory predictions for cementitious materials. A unique feature of this model is that it can also be used to accurately represent many deformable structures such as frames and shells, so that both particles and structures or deformable boundaries can be described in the same DEM framework.
- Subjects :
- Timoshenko beam theory
Materials science
Bond model
Computer simulation
Discrete element method (DEM)
business.industry
Bond
General Physics and Astronomy
Structural engineering
Physics and Astronomy(all)
Granular material
Discrete element method
Physics::Geophysics
Cracking
Materials Science(all)
Shear (geology)
Numerical modelling
Mechanics of Materials
Cementitious materials
General Materials Science
Cementitious
business
Subjects
Details
- ISSN :
- 14347636 and 14345021
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Granular Matter
- Accession number :
- edsair.doi.dedup.....76972af460bed25f3f9cd8672603106d