Experimental Investigation on Heat Generation of Tread Rubber Materials Under Tensile-Compression Cyclic Conditions

Aiming at the heat generation behavior of rubber products such as tires under complex loads, the thermal behavior of tread rubber materials under tensile and compressive loads is investigated by using a torsional fatigue testing machine to comparatively analyze the temperature difference between the inside and outside of the rubber cylinders and the heating history under different torsion angles and rotational speeds. Results demonstrate that during the initial rotation phase under cyclic loading, the external surface temperature of the rubber material exceeds internal measurements. However, with the continuation of cyclic loading, the internal temperature progressively escalates beyond surface temperatures. Furthermore, the temperature rise exhibited significant correlations with both imposed torsional angles and operational rotational speeds. This study provides valuable insights into heat generation patterns of rubber materials under complex working conditions.