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Article Dans Une Revue Polymer Engineering and Science Année : 2008

Steady plastic flow of a polymer during equal channel angular extrusion process: Experiments and numerical modeling

Résumé

Equal channel angular extrusion (ECAE) is a powerful tool to modify microstructure via high plastic deformation without altering sample geometry. This article investigates the behavior of a polypropylene processed by ECAE. A finite element analysis in which the material constitutive law is coupled with damage by means of Gurson-Tvergaard damage potential allowed to model experimental tests achieved on this material. Such a modeling allows the prediction of the extrusion load, strain and stress fields, and void volume fraction distribution. The need for the use of a back-pressure is highlighted.

Dates et versions

hal-00290704 , version 1 (26-06-2008)

Identifiants

Citer

Fahmi Zaïri, B. Aour, Jean-Michel Gloaguen, Moussa Nait-Abdelaziz, Jean Marc Lefebvre. Steady plastic flow of a polymer during equal channel angular extrusion process: Experiments and numerical modeling. Polymer Engineering and Science, 2008, 48 (5), pp.1015 - 1021. ⟨10.1002/pen.21042⟩. ⟨hal-00290704⟩

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