Finite element method for flow in compression molding of thin and thick parts

Erwin W. Liang, Charles L. Tucker

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Based on Barone and Caulk's model and a generalized variational functional, a finite element simulation was developed for the compression mold filling of thin and thick cavities. For solving the u-ν-p type equations, an element-based penalty method and a mixed formulation were implemented. Numerical results show that the new model gives better accuracy in velocity and velocity gradient than the Hele-Shaw formulation for cases where both models are appropriate. Predictions of velocity and its gradient by the model are compared with other FEM results and BEM solutions. Using a fixed mesh that covers the mold cavity, a new technique was developed for tracking the moving flow front. Temporary elements and nodes are generated for the filled part of elements intersected by the flow front. This method allows a smooth representation of the flow front and has exact boundary conditions on the flow front. The scheme is demonstrated for compression molding of elliptical and L-shaped charges.

Original languageEnglish (US)
Title of host publicationUse of Plastics and Plastic Composites
Subtitle of host publicationMaterials and Mechanics Issues
EditorsM. Ramulu, R. Komanduri
PublisherPubl by ASME
Number of pages17
ISBN (Print)0791812529
StatePublished - 1993
Externally publishedYes
EventProceedings of the 1993 ASME Winter Annual Meeting - New Orleans, LA, USA
Duration: Nov 28 1993Dec 3 1993

Publication series

NameAmerican Society of Mechanical Engineers, Materials Division (Publication) MD


OtherProceedings of the 1993 ASME Winter Annual Meeting
CityNew Orleans, LA, USA

ASJC Scopus subject areas

  • General Engineering


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