ABSTRACT
In this work, the stretch intensity factor for filled and unfilled elastomers for different mixtures is introduced. This new stretch intensity factor allows predicting the analytically evaluated energy release rate for a cracked sample under uniaxial tension. Thus, the opening mode from the fracture mechanics (Modus I) was investigated. Appropriate continuum mechanical derivations are based on a non-linear hyperelastic material behavior. The energy release rate is evaluated through a closed path integral very near to the crack tip whereby the integrand includes asymptotic solution of strain, stress and energy density using the Ogden model. The decisive advantage of this method is to predict well the critical tearing energy values by the crack growth using the analytical energy release rate term. In this work the Mullins effect is not considered, because the cracked samples are tested without any preconditioning.
