Influence of the multiscale distribution of particles on elastic properties of concrete
| Autor: | Julien Sanahuja, Julie Escoda, C. Toulemonde, François Willot, Dominique Jeulin |
|---|---|
| Přispěvatelé: | Centre de Morphologie Mathématique (CMM), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Matériaux et Mécanique des Composants (EDF R&D MMC), EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF) |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Computation 02 engineering and technology 01 natural sciences Homogenization (chemistry) [SPI.MAT]Engineering Sciences [physics]/Materials symbols.namesake 0203 mechanical engineering General Materials Science Linear elasticity 0101 mathematics FFT methods Homogenization Mechanical Engineering General Engineering Mechanics Microstructure Multiscale microstructures 010101 applied mathematics 020303 mechanical engineering & transports Fourier transform Properties of concrete Mechanics of Materials Scale separation symbols SPHERES Concrete |
| Zdroj: | International Journal of Engineering Science International Journal of Engineering Science, Elsevier, 2016, 98, pp.60-71. ⟨10.1016/j.ijengsci.2015.07.010⟩ |
| ISSN: | 0020-7225 |
| DOI: | 10.1016/j.ijengsci.2015.07.010 |
| Popis: | International audience; The mechanical role of the shape of the aggregates, and their spatial distribution in concrete materials is examined. The effect on the macroscopic mechanical response as well as on the local stress fields are investigated by numerical means, making use of a recently developed Poisson-polyhedra model in which the aggregates have polyhedral shapes. Comparison is made with previous microstructure models of spheres. Full-field computations are carried out on large volume size using Fourier methods. The field maps are used to determine zones of highest stress. Furthermore, the scale separation hypothesis for the computation of the elastic properties is investigated using numerical calculations on various multiscale microstructures. Finally, numerical predictions for the elastic properties are compared to experimental measurements, and the results discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect