Simulation of gas-assisted injection mold-cooling process using line source model approach for gas channel
- Chung Yuan Univ., Chung-Li (Taiwan, Province of China). Mechanical Engineering Dept.
Gas-assisted injection molding (GAIM) process, being an innovative injection molding process, can substantially reduce production expenses through reduction in material cost, reduction in clamp tonnage and reduction in cycle time. Whether it is feasible to perform an integrated simulation for process simulation based on a unified CAE model for gas-assisted injection molding (GAIM) is a great concern. In the present study, numerical algorithms based on the same CAE model used for process simulation regarding filling and packaging stages were developed to simulate the cooling phase of GAIM using a cycle-averaged three-dimensional modified boundary element technique similar to that used for conventional injection molding. However, to use the current CAE model for analysis, gas channel was modeled by two-node elements using line source approach. It was found that this new modeling not only affects the mold wall temperature calculation very slightly but also reduces the computer time by 95% as compared with a full gas channel modeling required a lot of triangular elements on gas channel surface. This investigation 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.
- OSTI ID:
- 669868
- Journal Information:
- International Communications in Heat and Mass Transfer, Vol. 25, Issue 7; Other Information: PBD: Oct 1998
- Country of Publication:
- United States
- Language:
- English
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