首页|Analysis of polypropylene deformation in a 135° ECAE die: experiments and three-dimensional finite element simulations
Analysis of polypropylene deformation in a 135° ECAE die: experiments and three-dimensional finite element simulations
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Plastic deformation of polypropylene (PP) resulting from equal channel angular extrusion (ECAE) process was investigated in a 135° die. A phenomenological elastic-viscoplastic constitutive model was identified and coupled with the three-dimensional finite element (FE) method in order to predict the different processing parameters governing the deformation behaviour of PP during the extrusion. An optimal agreement between FE results and experimental data was obtained for a friction coefficient of 0.2. A detailed three-dimensional FE analysis of stress-strain field distribution was then carried out. The effects of both the number of extrusion passes and the processing routes were experimentally highlighted. The results show that the pressing force decreases with the increase of the number of extrusion passes and reaches its saturation state rapidly for routes A and C while, for routes B_A and B_C, it requires a high number of passes.
polypropyleneECAEexperimentsfinite element analysis
B. Aour、F. Zaieri、M. Naiet-Abdelaziz、J.M. Gloaguen、J.M. Lefebvre
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ENSET d'Oran, Laboratoire de recherche en Technologie de I'Environnement, Departement de Mecanique, BP1523 EI'Mnaour 31000, Algeria
Universite Lille 1 Sciences et Technologies, Laboratoire de Mecanique de Lille (UMR CNRS 8107) Avenue P. Langevin, 59655 Villeneuve d'Ascq Cedex, France
Universite Lille 1 Sciences et Technologies, Laboratoire de Structure et Proprietes de I'Etat Solide (UMR CNRS 8008), Bat. C6, 59655 Villeneuve d'Ascq Cedex, France
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