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A finite element analysis of rubber coextrusion using a power‐law model
Author(s) -
Buscaglia Gustavo C.
Publication year - 1993
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620361302
Subject(s) - finite element method , natural rubber , galerkin method , viscosity , power law , plastics extrusion , materials science , stress (linguistics) , head (geology) , power (physics) , mechanical engineering , mechanics , mathematics , structural engineering , composite material , engineering , thermodynamics , physics , linguistics , statistics , philosophy , geomorphology , geology
A finite element method to simulate coupled thermal viscous coextrusion is presented, with a power‐law viscosity function obtained from viscometric data on rubber composites. It combines, by successive substitution iterations, some well‐known schemes, such as streamline integration for updating interfaces and Lagrange‐Galerkin treatment of the energy equation. Some details of the implementation are discussed. The method is then applied to a comparison of two pre‐forming plates for the dual tuber head extruder of Farrel Corporation. Both the normal stress and the temperature at the interface suggest that the presence of a deflector deteriorates the adherence properties. This prediction is in agreement with operational experience.