The Need to Use Generalized Continuum Mechanics to Model 3D Textile Composite Forming
| Autor: | Biao Liang, Julien Colmars, Nahiene Hamila, Philippe Boisse, Angela Madeo, Renzi Bai |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Continuum (measurement) Continuum mechanics Stiffness Cauchy distribution 02 engineering and technology 021001 nanoscience & nanotechnology Finite element method 020303 mechanical engineering & transports 0203 mechanical engineering Bending stiffness Hyperelastic material Ceramics and Composites medicine Fiber medicine.symptom Composite material 0210 nano-technology |
| Zdroj: | Applied Composite Materials. 25:761-771 |
| ISSN: | 1573-4897 0929-189X |
| DOI: | 10.1007/s10443-018-9719-8 |
| Popis: | 3D textile composite reinforcements can generally be modelled as continuum media. It is shown that the classical continuum mechanics of Cauchy is insufficient to depict the mechanical behavior of textile materials. A Cauchy macroscopic model is not capable of exhibiting very low transverse shear stiffness, given the possibility of sliding between the fibers and simultaneously taking into account the individual stiffness of each fibre. A first solution is presented which consists in adding a bending stiffness to the tridimensional finite elements. Another solution is to supplement the potential of the hyperelastic model by second gradient terms. Another approach consists in implementing a shell approach specific to the fibrous medium. The developed Ahmad elements are based on the quasi-inextensibility of the fibers and the bending stiffness of each fiber. |
| Databáze: | OpenAIRE |
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