Multi-scale modeling of the viscoelastic behavior of 3D woven composites
| Autor: | Martin Hirsekorn, Lionel Marcin, Thierry Godon |
|---|---|
| Přispěvatelé: | DMAS, ONERA, Université Paris Saclay (COmUE) [Châtillon], ONERA-Université Paris Saclay (COmUE), Safran Tech, Safran Aircraft Engines |
| Rok vydání: | 2018 |
| Předmět: |
THERMOMECHANICAL
COMPOSITE TISSE Materials science Composite number 3-DIMENSIONAL REINFORCEMENT 02 engineering and technology Atmospheric temperature range STRESS RELAXATION 021001 nanoscience & nanotechnology Viscoelasticity Matrix (mathematics) Superposition principle VISCOELASTICITE 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials COMPUTATIONAL MODELING [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] Ceramics and Composites Stress relaxation Composite material 0210 nano-technology Glass transition Scale model HOMOGENEISATION |
| Zdroj: | Composites Part A: Applied Science and Manufacturing Composites Part A: Applied Science and Manufacturing, Elsevier, 2018, 112, pp.539-548. ⟨10.1016/j.compositesa.2018.07.011⟩ |
| ISSN: | 1359-835X |
| DOI: | 10.1016/j.compositesa.2018.07.011 |
| Popis: | A method is presented to predict numerically the homogenized viscoelastic behavior of 3D woven composites using only its constituents’ behavior. It is based on elastic homogenizations applied to the Laplace-Carson transform of the time-dependent viscoelastic behavior of the constituents. Two scale changes are necessary: from micro- to meso-scale to obtain the homogenized behavior of the consolidated yarns, and from meso- to macro-scale. The temperature and cure dependent viscoelastic behavior of the matrix is identified from experimental data, using the time-temperature superposition principle with the cure dependent glass transition temperature as reference temperature. The meso-scale representative unit cell of the composite is extracted from X-ray microtomography images. The homogenized viscoelastic behavior is used to calculate the evolution of the apparent moduli of the composite with temperature between - 50 ° C and 200 ° C. The results are in good agreement with experimental data over the temperature range where the matrix behavior was properly identified. |
| Databáze: | OpenAIRE |
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