Application of Embedded Element in the Short Fiber Reinforced Composite
| Autor: | Li Hong Huang, Jian Hong Gao, Xiao Xiang Yang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Mechanical Engineering 02 engineering and technology Fiber-reinforced composite 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Finite element method 0104 chemical sciences Mechanics of Materials General Materials Science Element (category theory) Composite material 0210 nano-technology |
| Zdroj: | Key Engineering Materials. 774:241-246 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.774.241 |
| Popis: | The finite element analysis (FEA) is a numerical method for predicting the mechanical property of short fiber reinforced composite usefully. However, as we know, there is always a “jamming” limit when generating fiber architecture expecially in the cases of high volume fraction and high aspect ratio of short fiber. Even if the volume fraction and aspect ratio in finite element model meet the practical requirements, the problem of mesh deformity will always occur which would lead to unconverge of numerical computation. In this work, embedded element technique which will help to reduce the probability of the above two problems is employed to establish the finite element model of short fiber reinforced composite. The effect of edge size, thickness and mesh density of FE models on the elastic modulus were investigated. Numerical results show that the value of elastic modulus mainly depend on the edge size and fiber amount of FE model while the effect of thickness can be neglected. The elastic modulus takes to converge for high element number. An inverse method is proposed to calculate volume fraction of short fibers, by which numerical results agree well with the calculation results of empirical formula based on Halpin-Tsai equation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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