Abstract: This note actually is a discussion on the paper′ A Micromechanical Analysis of The Nonlinear Elastic and Viscoelastics Constitutive Relation of a Polymer Filled With Rigid Particles′ published in Acta Mechanica Sinica, Vol.25, No.5, 1993(or Vol.10, No.2, 1994, English Edition). In order to verify the validity of the statement concluded by the paper, two illustrative examples are considered. Analytical solutions for problems of a rigid spherical particle and a spherical void embedded in an infinite...