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Etude de la variation des champs mécaniques et thermique dans le béton bitumineux lors de chargement cyclique
| Content Provider | Semantic Scholar |
|---|---|
| Author | Riahi, Ebrahim Allou, Fatima Dubois, Frédéric Ulmet, Laurent Absi, Joseph Petit, Christophe |
| Copyright Year | 2015 |
| Abstract | The asphalt concrete is a heterogeneous material co ntaining a bituminous matrix with viscoelastic properties and aggregates with elastic behavior. Me chanical behavior of the final mixture is strongly dependent to the behavior of bituminous matrix whic h is a thermo-sensitive material. During the fatigue test, cyclic solicitations create dissipate d nergy which is the source of auto-heating of material and consequently the decrease of binder ri gidity. In this paper, local dissipated energy density in the bituminous matrix as well as tempera ture evolution, under a fatigue test loading, is calculated using a heterogeneous simulation by fini te element method. The results of the numerical simulation at thin film of matrix show a dissipated nergy density until 30 times higher than the homogenized average value. Temperature evolution at this level is higher at first, but it disappears over time by effect of heat transfer to the aggrega t s of economical and safer societies requires to improve the means of transport and of energy produc tion. Mots clefs : Modélisation hétérogène, Energie dissi pée, Echauffement, Viscoélasticité, Fatigue, Enrobé bitumineux. 22 Congrès Français de Mécanique Lyon, 24 au 28 Août 2015 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://documents.irevues.inist.fr/bitstream/handle/2042/57839/68775.pdf?sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
