抄録
To prevent quality loss of processed material due to non-uniform temperature and stress of press molding die, a coupled analysis is executed to minimize the difference between maximum and minimum temperature and maximum stress at pressure surface by changing cooling tube location and diameter. The coupled analysis consists of thermo-fluid analysis, heat transfer analysis, and structural analysis, and the continuous calculation required for optimization of the coupled analysis is automated by optimization software. Heat transfer analysis is conducted using temperature distribution of cooling tube which results from thermo-fluid analysis to calculate temperature difference at pressure surface. Structural analysis is conducted using heat strain caused by temperature distribution of die which results from heat transfer analysis to calculate maximum equivalent stress at pressure surface. As a result of optimization after sensitivity analysis, temperature and stress of molding die improved by 76.4% and 34.8%, respectively.
