Premium
Simulation of forming processes by FEM with a Bingham fluid model
Author(s) -
Bercovier M.,
Engelman M.,
Fortin M.,
Goldberger N.
Publication year - 1986
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.1650060403
Subject(s) - finite element method , bingham plastic , forming processes , deformation (meteorology) , flow (mathematics) , mechanics , fluid dynamics , plasticity , stress (linguistics) , process (computing) , materials science , mechanical engineering , structural engineering , engineering , computer science , rheology , physics , composite material , linguistics , philosophy , operating system
We model the forming process as a fluid flow. A finite element program, FIDAP, which analyses flow problems, was used to calculate velocity and strain rates at points throughout the material during the deformation process. This allows predictions to be made on the shape and quality of the resulting part. The stress‐strain relation we used models the plastic flow of metals (Bingham fluids). The FEM approximation of such a fluid is tested by comparing results for a simple analytical example. In forming processes provision must be made for friction between dye and workpiece, and the program was modified accordingly. Two classical ring forming simulations are compared to published results.