Abstract

Soft cellular solids like sponge and muscle have the nonlinear viscoelasticity due to the internal gas or liquid in cells and the behavior of the matrix of the solids. Their stress-time curves are different by the variation of their internal structures, and it causes difficulties in the evaluation of the mechanical characteristic of the solids. In this study, we adopted the multiplication form of power and exponent function that is able to approximate the nonlinear behavior of soft cellular solids. Then, we examine the adequacy of this method by its application to the experimental result of tensile testing of SBR sponge and chicken muscular tissue.

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