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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.
https://hal.archives-ouvertes.fr/hal-02465445
Contributor : Stéphane Méo Connect in order to contact the contributor
Submitted on : Monday, February 3, 2020 - 9:17:16 PM
Last modification on : Sunday, June 26, 2022 - 2:46:37 AM
Contributor : Stéphane Méo Connect in order to contact the contributor
Submitted on : Monday, February 3, 2020 - 9:17:16 PM
Last modification on : Sunday, June 26, 2022 - 2:46:37 AM