An invariant based transversely-isotropic constitutive model for unidirectional fibre reinforced composites considering the matrix viscous effects
Fibres Reinforced Polymers (FRPs) are found in several applications in aeronautics, space and in the automotive industry. These applications are exposed to loading conditions, including impact, which results in a complex mechanical response that is vital to accurately predict. This is particularly i...
| Authors: | , , , |
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| Format: | article |
| Publication Date: | 2019 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | English |
| OAI Identifier: | oai:upcommons.upc.edu:2117/366703 |
| Online Access: | https://hdl.handle.net/2117/366703 https://dx.doi.org/10.1016/j.mechmat.2019.103146 |
| Access Level: | Open access |
| Keyword: | Composite materials Viscoplasticity Viscoelasticity Constitutive model Fibre reinforced polymers Viscoelasticity Invariant theory Materials compostos Viscoplasticitat Viscoelasticitat Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos |
| Summary: | Fibres Reinforced Polymers (FRPs) are found in several applications in aeronautics, space and in the automotive industry. These applications are exposed to loading conditions, including impact, which results in a complex mechanical response that is vital to accurately predict. This is particularly important for a new generation of thermoplastic-based composites. The model proposed in this work is an invariant-based approach to represent viscous effects in polymer composites. The model developed only requires two viscous parameters to calibrate the viscoelastic behaviour. A good correlation between the simulations and experimental data obtained in off- axis tests in tension and compression is obtained. |
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