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Composites: Mechanics, Computations, Applications, An International Journal

ISSN Print: 2152-2057
ISSN Online: 2152-2073

Composites: Mechanics, Computations, Applications, An International Journal

DOI: 10.1615/CompMechComputApplIntJ.v1.i1.50
pages 63-79

STRUCTURAL-PHENOMENOLOGICAL MODEL OF THE MECHANICAL BEHAVIOR OF RUBBER

I. A. Morozov
Institute of Continuous Media Mechanics, Ural Branch of the Russian Academy of Sciences, 1 Acad. Korolev Str, Perm, 614013, Russia and Perm State National Research University, 15 Bukerev Str., Perm, 614990, Russia
A. L. Svistkov
Institute of Continuum Mechanics, Ural Branch of the Russian Academy of Scieces, Perm, Russia

ABSTRACT

Filled elastomers (rubbers) are composite materials distinguished by the complex structure and specific properties due to the interaction of the filler and binder at the phase interface. A structural-phenomenological model of the viscoelastic behavior of rubber is suggested in the present work. Apart from the plastic, elastic, and viscous elements, the model involves a new type of elements − transmission ones that connect the structural deformations of the matrix at the nanolevel with the deformation of the material. A comparison with the experiment has demonstrated a good reproducibility of the Mullins softening effect and the viscoelastic behavior of rubber in a wide range of the amplitudes of deformation. The determination of the unknown constants of the model is split into several independent stages, which substantially simplifies practical realization.