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Penalty formulation for postfilling analysis during injection molding
Author(s) -
Kang Sung Yong,
Kim Sun Kyoung,
Lee Woo Il
Publication year - 2007
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1630
Subject(s) - compressibility , molding (decorative) , penalty method , similarity (geometry) , mathematics , process (computing) , stage (stratigraphy) , mathematical optimization , algorithm , computer science , mechanics , mechanical engineering , engineering , physics , artificial intelligence , geology , paleontology , image (mathematics) , operating system
We propose an approximate method that can simulate the packing stage during the injection molding using the penalty parameter method. In order to account for the compressibility effect, an update scheme based on similarity between the slightly compressible and the penalty formulations is proposed. The method allows for solving the entire injection molding process using a single algorithm with the penalty method in spite of the transition from the incompressible regime during the filling stage into the compressible regime for the packing stage. Several test cases have been presented to prove the validity of the method. It has been shown that the accuracy of the proposed method is identical to that of the mixed method. Copyright © 2007 John Wiley& Sons, Ltd.