Automatic optimization of the cooling of injection mold based on the boundary element method

Abstract : Part cooling during injection molding is the critical step as it is the most time consuming. An inefficient mold cooling may have dramatic consequences on cycle time and part quality and may require expensive mold rectification. In order to reduce mold and production costs, an automatic optimization of cooling device geometry and processing parameters (temperature, flow rate...) has been developed. The first step of the optimization is to choose parameters describing the geometry of the cooling device (which may be complex in case of molds obtained by prototyping process). Then numerical simulation of the heat transfer during cooling stage is coupled to a non linear constraint optimization method (sequential quadratic programming). The objective is to find the best set of parameters according to a cost function representing cooling uniformity and/or cooling speed. At each step of the optimization, the boundary element method is used to solve the heat transfer equation (the dual reciprocity method is used for transient problems) and to determine the effect of the parameters on the cost function. The main advantage of the BEM is that remeshing procedure is easier. As a validation, the method is applied to 2D mold geometries representative of difficulties arising during cooling of real industrial parts (with thickness changes or angles). The first computations show fair results.
Type de document :
Communication dans un congrès
Ghosh, S and Castro, JM and Lee, JK. NUMIFORM 2004 - 8th International conference on numerical methods in industrial forming processes, Jun 2004, Columbus, United States. Extrait de : Materials processing and design : modeling, simulation and applications ; NUMIFORM 2004 proceedings of the 8th International conference on numerical methods in industrial forming processes / sous la dir. de S. GHOSH, J.M. CASTRO et J.K. LEE. - ISBN 0-7354-0189-6, 712, pp.222-227, 2004, AIP CONFERENCE PROCEEDINGS
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https://hal.archives-ouvertes.fr/hal-01716287
Contributeur : Mines Albi Ecole Nationale Supérieure Des Mines d'Albi-Carmaux <>
Soumis le : vendredi 23 février 2018 - 15:05:46
Dernière modification le : lundi 23 juillet 2018 - 10:18:41

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  • HAL Id : hal-01716287, version 1

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E Mathey, Luc Penazzi, Fm Schmidt, F Ronde-Oustau. Automatic optimization of the cooling of injection mold based on the boundary element method. Ghosh, S and Castro, JM and Lee, JK. NUMIFORM 2004 - 8th International conference on numerical methods in industrial forming processes, Jun 2004, Columbus, United States. Extrait de : Materials processing and design : modeling, simulation and applications ; NUMIFORM 2004 proceedings of the 8th International conference on numerical methods in industrial forming processes / sous la dir. de S. GHOSH, J.M. CASTRO et J.K. LEE. - ISBN 0-7354-0189-6, 712, pp.222-227, 2004, AIP CONFERENCE PROCEEDINGS. 〈hal-01716287〉

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