ABSTRACT

For the elastomers, a specimen undergoing a fatigue test also sees its temperature rises. Heat generation is the conversion of the mechanical energy into heat due to the hysteretic behavior. Many works have been done on the causes and consequences of heat generation [Medalia 1991; Park et al. 2000]. It is generally attributed to molecular friction but at large strain for some rubbers the strain-induced crystallization takes a part of the energy associated to the hysteresis [Toki et al. 2000; Trabelsi et al. 2003; Marchal 2006]. The consequence is that the heat generation is less important [Darth & Guth 1945; Le Saux 2010]. As the rise of the temperature is the main consequence of the hysteresis, it has been shown that the evolution of the stabilized surface temperature with the hysteresis area is a linear relationship for uniaxiale and multiaxiale solicitation and whether the rubber used crystallizes or not [Harbour et al. 2008].