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A visco-hyperelastic damage model for cyclic stress-softening, hysteresis and permanent set in rubber using the network alteration theory

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2014
auteur(s) Ayoub Georges; Zaïri Fahmi; Naït Abdelaziz Moussa; Gloaguen Jean-Michel; Kridli G.
journal (abréviation) International Journal of Plasticity (Int J Plast)
volume (numéro) 54
pages 19 – 33
résumé The large deformation time-dependent mechanical response of rubber-like materials under cyclic loading is characterized by stress-softening, hysteresis and permanent set. To describe this set of first-order phenomena a constitutive model integrating the physics of polymer chains and their alteration under cyclic loading is proposed. The time-dependency is considered using a Zener-type framework in which the chain extensibility limit is described with both physical and phenomenological approaches. The efficiency of the proposed constitutive model is illustrated by comparisons with experimental data obtained on a styrene-butadiene rubber submitted to cyclic tension loading up to failure both in constant and variable amplitudes.
mots clés Elastomeric materials; Cyclic stress-softening; Hysteresis; Permanent set; Network alteration theory; Visco-hyperelasticity
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