Revisiting the Deshpande-Fleck Foam Model
| Autor: | Kai Zhao, Zhijun Zheng, Jilin Yu, Chang Feng Zhu, Shi Long Wang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Mechanical Engineering Constitutive equation 02 engineering and technology Metal foam 021001 nanoscience & nanotechnology 01 natural sciences Finite element method 010305 fluids & plasmas Mechanics of Materials 0103 physical sciences General Materials Science Composite material 0210 nano-technology |
| Zdroj: | Key Engineering Materials. 803:134-139 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.803.134 |
| Popis: | The self-similar isotropic hardening model developed by Deshpande and Fleck has been widely used. An important issue in this model is to determine the value of ellipticity. The ellipticity was treated as a constant in the subsequent yield, but different values were suggested in the literature. In this paper a cell-based finite element model based on the 3D Voronoi technique is used to verify the Deshpande-Fleck foam model. It is found that the ellipticity determined from uniaxial and hydrostatic compressions varies with the equivalent plastic strain. |
| Databáze: | OpenAIRE |
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