Experimental investigation of the strain-rate effects on the failure of composite materials with off-axis tensile tests on unidirectional plies
| Autor: | Thomas Fourest, Julien Berthe |
|---|---|
| Přispěvatelé: | DMAS, ONERA [Lille], ONERA, Direction générale de l'Aviation civile (DGAC), Région Hauts-de-France |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Unidirectional composite
Materials science 02 engineering and technology Viscoelasticity Stress (mechanics) Off-axis tensile test 0203 mechanical engineering Composite unidirectionnel Visco-élasticité Ultimate tensile strength [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] Visco-elasticity Failure criteria Composite material Tension (physics) Mechanical Engineering Strain rate 021001 nanoscience & nanotechnology Strength of materials Shear (sheet metal) Transverse plane 020303 mechanical engineering & transports Mechanics of Materials Essais de traction hors-axe 0210 nano-technology Critère de rupture |
| Zdroj: | Strain Strain, Wiley-Blackwell, 2021, 57 (4), pp.e12385. ⟨10.1111/str.12385⟩ |
| ISSN: | 0039-2103 1475-1305 |
| DOI: | 10.1111/str.12385⟩ |
| Popis: | International audience; The present study experimentally investigates the mechanical response of T700/M21 Carbon Fibre Reinforced Polymers subjected to coupled shear and transverse tension at intermediate strain rates ranging from 10−3 to 15 s−1. Off-axis tension specimens with transverse and oblique tabs are used for the various tests. Moreover, the specimen aspect ratio is quite low, since dynamic tests are performed in this study. The axial stress–strain curves are successfully simulated using finite element simulations with a viscoelastic model. Based on these numerical simulations, specific stress correction factors are computed to take the effect of end constraints into account for such low aspect ratio specimens. Finally, an increase in the material strength with the strain rate is observed. |
| Databáze: | OpenAIRE |
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