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題名 | Simulation of Mold-Cooling Process for Gas-Assisted Injection Molded Parts Designed with Top Rib on Gas Channel=含氣道之氣體輔助射出成型品的冷卻過程分析模擬 |
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作者 | 簡仁德; 陳俊生; 鍾藏棟; | 書刊名 | 南亞學報 |
卷期 | 19 1999.07[民88.07] |
頁次 | 頁11-34 |
分類號 | 467.41 |
關鍵詞 | Gas-assisted injection molding; GAIM; Gas channel; 氣體輔助射出成型品; 冷卻; |
語文 | 英文(English) |
英文摘要 | In the present study, the line source method is implemented so that the same CAE model used for gas-assisted injection molding (GAIM) process simulation regarding filling and packing stages can also be applied to simulate the cooling phase considering the influence of the cooling system. The cycle-averaged and cyclic transient mold cavity surface temperature distribution within a steady cycle are calculated using three-dimensional modified boundary element technique similar to that used in the conventional injection molding. The analysis results for GAIM plates of semicircular gas channel design attached with a top rib are illustrated and discussed. It was found that the difference in cycle-averaged mold wall temperatures may be as high as 10 ℃ and within a steady cycle, part temperatures may also vary about 15 ℃. The conversion of gas channel into equivalent circular pipe and further simplification into two-node elements using the line source method not only affects the mold wall temperature calculation very slightly, but also reduces the computer time by 93%. This indicates that it is feasible to achieve an integrated process simulation for GAIM under one CAE model, resulting in great computational efficiency for industrial application. |
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