5. Identification of behavior law parameters
We saw in paragraph 2.1 that a key problem was the choice of behavior law ("fluid" or "solid" type). Briefly, we can consider that :
in processes where processing starts from the liquid state (a parison of extruded polymer that is blown), it is reasonable to consider a law of liquid behavior (Newtonian in the first approximation, then viscoelastic);
...
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Identification of behavior law parameters
Application to industrial process simulation
References
- (1) - G'SELL (C.), JONAS (J.J.) - Determination of the plastic behavior of solid polymers at constant true strain rate. - J. Mater. Sci., 14, p. 583-591 (1979).
- (2) - GORLIER (E.) - Caractérisation rhéologique et structurale d'un PET. Application au procédé de biétirage soufflage de bouteilles. - Thèses...
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