Numerically-aided 3D printed random isotropic porous materials approaching the Hashin-Shtrikman bounds
| Autor: | M.G. Tarantino, Othmane Zerhouni, Kostas Danas |
|---|---|
| Přispěvatelé: | Laboratoire de mécanique des solides (LMS), École polytechnique (X)-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Additive manufacturing 02 engineering and technology Hashin-Shtrikman bounds 010402 general chemistry 01 natural sciences Homogenization (chemistry) Industrial and Manufacturing Engineering [SPI]Engineering Sciences [physics] Boundary value problem Composite material Effective properties Porosity Homogenization Mechanical Engineering Isotropy Porous Materials Random Sequential Adsorption 021001 nanoscience & nanotechnology Microstructure Random composites 0104 chemical sciences Mechanics of Materials Ceramics and Composites Representative elementary volume Affine transformation 0210 nano-technology Porous medium |
| Zdroj: | Composites Part B: Engineering Composites Part B: Engineering, Elsevier, 2019, 156, pp.344-354. ⟨10.1016/j.compositesb.2018.08.032⟩ |
| ISSN: | 1359-8368 1879-1069 |
| DOI: | 10.1016/j.compositesb.2018.08.032⟩ |
| Popis: | International audience; The present study introduces a methodology that allows to combine 3D printing, experimental testing, numerical and analytical modeling to create random closed-cell porous materials with statistically controlled and isotropic overall elastic properties that are extremely close to the relevant Hashin-Shtrikman bounds. In this first study, we focus our experimental and 3D printing efforts to isotropic random microstructures consisting of single-sized (i.e. monodisperse) spherical voids embedded in a homogeneous solid matrix. The 3D printed specimens are realized by use of the random sequential adsorption method. A detailed FE numerical study allows to define a cubic representative volume element (RVE) by combined periodic and kinematically uniform (i.e. average strain or affine) boundary conditions. The resulting cubic RVE is subsequently assembled to form a standard dog-bone uniaxial tension specimen, which is 3D printed by use of a photopolymeric resin material. The specimens are then tested at relatively small strains by a proper multi-step relaxation procedure to obtain the effective elastic properties of the porous specimens. |
| Databáze: | OpenAIRE |
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