Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7889955 | Composites Part A: Applied Science and Manufacturing | 2018 | 8 Pages |
Abstract
Fiber orientation distribution in injection molded fiber composites has an important shell-core structure. Recently, significant theoretical orientation models, including RSC (Reduced Strain Closure), ARD (Anisotropic Rotary Diffusion), and iARD-RPR (improved ARD and Retarding Principal Rate), have been widely applied in commercial injection molding simulation software. However, there is a long-running problem requiring an urgent solution for the state-of-the-art predictive models: obvious deviation of fiber orientation was found in the core region, although the orientation in the shell layer was predicted well. According to the fiber motions of flow-induced orientation, we therefore aimed to introduce a relationship between the model parameters and the shear rate. As validation, the shear-rate-dependent parameters can effectively enhance the prior orientation results for short-glass-fiber composites and long-carbon-fiber-composites in injection molding simulations, with good agreement between the present predictions and the experimental data obtained thereby.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Huan-Chang Tseng, Rong-Yeu Chang, Chia-Hsiang Hsu,