ABSTRACT
Tests were conducted under displacement control. The prescribed displacement consisted of two parts:
• four quasi-static cycles between 0 and 25% nominal strain with 60-second dwell at 25%.
• 5000 cycles of harmonic loading at given static deformation. The values of deformation and
1 INTRODUCTION
There exists a vast amount of literature dialing with various effects of loading conditions and environment on mechanical properties of rubber. Probably the most widely used concepts in modelling damage and fatigue is Continuum Damage Mechanics (CDM). In this work a different approach is chosen. Instead of trying to develop an exact model of the mechanisms behind the changes of material properties, an approximation of constitutive parameters is given based on experimental data. Similar approach was used e.g. in (Ayoub, Zaïri, Naït-Abdelaziz, & Gloaguen 2011) for modelling low cycle fatigue of SBR rubber or in (Ben Hassine, Naït-Abdelaziz, Zaïri, Colin, Tourcher, & Marque 2014) to express elastic properties of EPDM rubber subjected to thermal ageing.
