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Article Dans Une Revue Science and Technology of Advanced Materials Année : 2008

On cavitation and macroscopic behaviour of amorphous polymer-rubber blends

Résumé

The macroscopic behaviour of rubber-modified polymethyl methacrylate (PMMA) was investigated by taking into account the microdeformation mechanisms of rubber cavitation. The dependence of the macroscopic stress-strain behaviour of matrix deformation on the cavitation of rubber particles was discussed. A phenomenological elastic-viscoplastic model was used to model the behaviour of the matrix material, while the rubber particles were modelled with the hyperelasticity theory. A two-phase composite material with a periodic arrangement of reinforcing particles of a circular unit cell section was considered. Finite-element analysis was used to determine the local stresses and strains in the two-phase composite. In order to describe the cavitation of the rubber particles, a criterion of void nucleation is implemented in the finite-element (FE) code. A comparison of the numerically predicted response with experimental result indicates that the numerical homogenisation analysis gives satisfactory prediction results.

Dates et versions

hal-00373754 , version 1 (07-04-2009)

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Naïma Belayachi, Noureddine Benseddiq, Moussa Nait-Abdelaziz, Adel Hamdi. On cavitation and macroscopic behaviour of amorphous polymer-rubber blends. Science and Technology of Advanced Materials, 2008, 9 (2), pp.025008. ⟨10.1088/1468-6996/9/2/025008⟩. ⟨hal-00373754⟩

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