Thermoelastic properties of microcracked polycrystals. Part II: The case of jointed polycrystalline TATB
| Autor: | Hervé Trumel, Jean-Baptiste Gasnier, Dominique Jeulin, Maxime Biessy, François Willot |
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| Přispěvatelé: | Centre de Morphologie Mathématique (CMM), Mines Paris - PSL (École nationale supérieure des mines de Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Centre des Matériaux (CDM), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), CEA Le Ripault (CEA Le Ripault), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), MINES ParisTech - École nationale supérieure des mines de Paris, Centre des Matériaux (MAT) |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
02 engineering and technology 01 natural sciences Homogenization (chemistry) Physics::Geophysics Condensed Matter::Materials Science symbols.namesake chemistry.chemical_compound Thermoelastic damping [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] 0103 physical sciences Thermal General Materials Science Composite material TATB Thermoelasticity 010302 applied physics Homogenization Applied Mathematics Mechanical Engineering Numerical analysis Cracked polycrystals Intergranular corrosion 021001 nanoscience & nanotechnology Condensed Matter Physics Fourier transform chemistry Mechanics of Materials Modeling and Simulation symbols Crystallite 0210 nano-technology |
| Zdroj: | International Journal of Solids and Structures International Journal of Solids and Structures, 2018, 155, pp.257-274. ⟨10.1016/j.ijsolstr.2018.07.025⟩ International Journal of Solids and Structures, Elsevier, 2018, 155, pp.257-274. ⟨10.1016/j.ijsolstr.2018.07.025⟩ |
| ISSN: | 0020-7683 |
| Popis: | International audience; The thermoelastic responses of a cracked TATB polycrystal is modeled using Fourier-based numerical computations and linear homogenization estimates. The numerical method is based on a Fourier scheme previously investigated (Gasnier et al., 2018) and the homogenization schemes include a new self-consistent estimate recently developed for cracked polycrystals. The effect of various populations of intergranular and transgranular microcracks are compared, with special attention to thermal behavior in the percolating regime. A model of micro-cracks is proposed for the TATB material in its initial state and the variations of the volumetric expansion coefficient of the TATB polycrystal under thermal cycles, during cooling and heating, are interpreted. |
| Databáze: | OpenAIRE |
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