Abstract
The dynamic properties of rubbers have been investigated at large extensions in asymmetric cycles. Methods of calculating the characteristics of the elastic C∞ and hysteretic A properties of rubbers in two regimes are presented: 1) when the harmonic strain amplitude e0 and the mean strain ɛ are given; 2) when the harmonic displacement amplitude w0 of the rubber specimen and a spring dynamometer connected in series and the static load Qst are given. It is shown that in the case of vulcanizates based on crystallizing rubbers and active fillers in the region of strains e0, e and loads Qst causing crystallization during extension C∞ and A increase with increase in e0, e, and Qst. The variation of C∞ and A with e0, e, and Qst is qualitatively different for different types of deformation.
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