Abstract
In this paper, we deal with the mechanical behavior of elastomeric materials subjected to high cyclic loading in cases of high strain. First, a methodology for material parameter identification is used for a constitutive visco-hyperelastic law with discontinuous damage, modeling the Mullins effect. Then a fatigue model characterized by a strain energy density-based criterion is proposed and implemented in the finite element code, Code-Aster [1]. Two kinds of elastomer are considered, an incompressible rubber and an expanded compressible polyurethane. Cyclic tensile tests were performed to identify material fatigue parameters. Finally, a numerical application using a finite element model is presented. This model is a plate perforated by a ∅6 mm hole for the first sample and a ∅10 mm hole for the second one. The results obtained from the finite element model are compared to experimental results.
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Acknowledgments
This paper was written in the framework of a project called SN2C, Simulation Numérique Conception Chaussure, funded by the Rhone-Alpes Region and the DGCIS: Direction Générale de la Compétitivité de l’Industrie et des Services.
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Benkahla, J., Baranger, T.N. & Issartel, J. Fatigue Life Estimation for an NBR Rubber and an Expanded Polyurethane. Exp Mech 53, 1383–1393 (2013). https://doi.org/10.1007/s11340-013-9749-y
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DOI: https://doi.org/10.1007/s11340-013-9749-y