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Experimental and Numerical Investigations for Quantifying Variability of NR Mechanical Properties after Thermal Aging

Abstract : The evolution of mechanical properties of NR with carbon black fillers was examined after a thermal aging step through both experimentation and non-deterministic numerical simulations. A quantification of mechanical properties and associated variability is first proposed for a set of specimens exposed at different temperatures and exposure times. Second, a family of stretch–stress laws is numerically built with a James' hyperelastic model. Next, the whole of the behavior evolution is modeled with a Kriging model to quantify the effects of properties on a macroscopic stiffness, useful in dynamic simulations, and the least-favorable scenario is so determined. Finally, Arrhenius method is performed to numerically draw the evolution bounds of macroscopic stiffness as a function of aging exposure, followed by a comparison with a naturally aged suspension component. To our knowledge, the methodology developed has not already been proposed in this area.
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https://hal.archives-ouvertes.fr/hal-02465445
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Submitted on : Monday, February 3, 2020 - 9:17:16 PM
Last modification on : Sunday, June 26, 2022 - 2:46:37 AM

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Andrés Malo Estepa, Franck Massa, Adnane Boukamel, Thierry Tison, Philippe Champagne, et al.. Experimental and Numerical Investigations for Quantifying Variability of NR Mechanical Properties after Thermal Aging. Rubber Chemistry and Technology, American Chemical Society, 2021, 94 (1), pp.160-179. ⟨10.5254/rct.20.80405⟩. ⟨hal-02465445⟩

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