Study of the Influence of Packing Process on Shrinkage and Residual Stress in Thick Parts
| Autor: | Hsuan-Liang Lin, 林炫良 |
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| Rok vydání: | 2003 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 91 The study concerns about the residual stress and shrinkage in injection molded thick parts. In the experiment, flat parts with 105 mm in length and 90 mm in width were injection molded. Part thickness were varied from 4 mm to 6 mm and to 8 mm. Different processing parameters including holding pressure and holding time were used. CAE analyses were also implemented to assist in the evaluation of residual stress and shrinkage formation. The digital photo elasticity system is implemented to measure the residual stress and the associated distribution and to check how it varies with thickness and processing parameters. For the thick parts, different processing parameters make a great effect. The residual stress show significant increases with increased holding pressure. And with thickness being greater, the shrinkage of thick part becomes greater. The result of CAE prediction shows qualitative trend with the observation of experiments. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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