Mesoscale modeling of the temperature-dependent viscoelastic behavior of a Bitumen-Bound Gravels
| Autor: | SOW, Libasse, Bernard, Fabrice, Kamali-Bernard, Siham, Kébé , Cheikh Mouhamed Fadel |
|---|---|
| Přispěvatelé: | Laboratoire de Génie Civil et Génie Mécanique (LGCGM), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
standardized elastic moduli
WLF law [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering [SPI.GCIV.IT]Engineering Sciences [physics]/Civil Engineering/Infrastructures de transport road aggregates standardized volume moduli [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction hierarchical multi-scale modeling Prony series thermorheological simplicity bitumen viscoelasticy |
| Zdroj: | Coupled systems mechanics Coupled systems mechanics, Techno-Press, 2018, 5 (7), pp.509-524. ⟨10.12989/csm.2018.7.5.509⟩ Coupled systems mechanics, 2018, 5 (7), pp.509-524. ⟨10.12989/csm.2018.7.5.509⟩ |
| ISSN: | 2234-2184 2234-2192 |
| Popis: | International audience; A hierarchical multi-scale modeling strategy devoted to the study of a Bitumen-Bound Gravel (BBG) is presented in this paper. More precisely, the paper investigates the temperature-dependent linear viscoelastic of the material when submitted to low deformations levels and moderate number of cycles. In such a hierarchical approach, 3D digital Representative Elementary Volumes are built and the outcomes at a scale (here, the sub-mesoscale) are used as input data at the next higher scale (here, the mesoscale). The viscoelastic behavior of the bituminous phases at each scale is taken into account by means of a generalized Maxwell model: the bulk part of the behavior is separated from the deviatoric one and bulk and shear moduli are expanded into Prony series. Furthermore, the viscoelastic phases are considered to be thermorheologically simple: time and temperature are not independent. This behavior is reproduced by the Williams-Landel-Ferry law. By means of the FE simulations of stress relaxation tests, the parameters of the various features of this temperature-dependent viscoelastic behavior are identified. |
| Databáze: | OpenAIRE |
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