Test and Characterization On the Temperature Dependence of Hyperelastic Behavior of Tire Rubbers Under Moderate Finite Deformation

In this paper, based on the testing system containing a temperature box where Automated Grid Method is applied, the experimental investigation on the temperature dependence of hyperelastic behavior of tire rubbers under moderate finite deformation is carried out. Test results show that rubber’s stress at certain stretch has a tendency first to decrease and then to increase with temperature rising. By applying statistical network theory, we extend the Modified Arruda-Boyce model to a form with explicit temperature parameters. This new model reveals that there are two different kinds of mechanisms governing the temperature dependence of mechanical properties of tire rubbers simultaneously, which leads to the phenomena observed in experiments. Besides, evaluation results demonstrate that the explicit temperature-dependent Modified Arruda-Boyce model can represent acceptable prediction ability for the hyperelastic behavior of tire rubbers at different temperatures.