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A unified simulation of the filling and postfilling stages in injection molding. Part II: Experimental verification
Author(s) -
Chiang H. H.,
Hieber C. A.,
Wang K. K.
Publication year - 1991
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760310211
Subject(s) - materials science , molding (decorative) , compressibility , amorphous solid , composite material , blow molding , polymer , computer simulation , mechanical engineering , crystallinity , mechanics , mold , engineering , physics , crystallography , chemistry
The unified numerical simulation of the filling/postfilling stages of the injection‐molding process described in Part I is compared in the present paper with experimental results obtained with instrumented test molds. Flush‐mounted pressure traces in the delivery system as well as in the cavity are favorably compared with corresponding predictions for both an amorphous and a semicrystalline polymer. It is demonstrated that the present unified formulation is well suited to handle complicated molds where compressibility effects can become important even during the filling stage, as portions of the cavity fill and undergo a packing behavior even when other regions of the cavity are still only partially filled.