Abstract

AbstractThe material nonlinearities in the viscoelastic behavior of rubbers at modest‐to‐large deformations have been studied. A vulcanized network based on the styrene–butadiene elastomer has been tested in stress‐relaxation experiments at room temperature for a wide range of deformations. After time–strain separabality was confirmed, the damping function could be calculated and introduced into the Boltzmann superposition integral. The equilibrium stress–strain behavior of the system could then be described, while comparison with other theoretical equations has also been made. © 1994 John Wiley & Sons, Inc.

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