Predeformation and frequency-dependence : Experiment and FE analysis
Nidhal Jridi  2, 1@  , Michelle Salvia  2@  , Adel Hamdi  1@  , Olivier Bareille  2@  , Makrem Arfaoui  1@  , Mohamed Ichchou  2@  , Jalel Ben Abdallah  1@  
2 : Laboratoire de Tribologie et Dynamique des Systèmes  (LTDS)  -  Website
CNRS : UMR5513, Ecole Centrale de Lyon
36 Avenue Guy de Collongue, 69134 Ecully Cedex -  France
1 : Laboratoire de Mécanique Appliquée et Ingénierie LR-11-ES19  (LRMAI)  -  Website
Université de Tunis El Manar, École Nationale d'Ingénieurs de Tunis, LR-11-ES19 Laboratoire de Mécanique Appliquée et Ingénierie, 1002, Tunis, Tunisie -  Tunisia

Elastomers show significant dependence on prestrain and frequency when they are loaded with large static predeformation superimposed by harmonic small amplitude dynamic excitations. In order to investigate these dependencies, quasi statics and dynamic experiments were carried out. Based on the experimental facts, we examined the capacity of the Simo viscoelastic model implemented in the FEA software Abaqus to simulate experimental data with good accuracy. The formulation is in the frequency domain. Therefore, the constitutive equations are linearized in the neighborhood of a predeformed configuration, with the assumption that the linear expression of stress governs the new configuration. Hence, the experimental data at different prestrain levels are compared to the simulation results.


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