だ円形異質ゴムを含むゴム複合体の変形の解析

抄録

The fundamental deformation behaviour of rubber composites, especially the nonuniform distributions of stress and strain in the material was studied. A plane model of rubber composites with elliptic heterogeneous rubber was employed. Namely, elliptic regions having different elastic constants were assumed to be present regularly in the matrix. Tensile deformation of the composites was analyzed numerically under the condition of the plane stress with the Mooney-Rivlin type strain energy function. The finite element method was used for the numerical simulation.
It was shown that the deformation mode of the model was similar to that of constant strain as the shape of the elliptic region became slender in the tensile direction. The distributions of stress and strain in the elliptic region were nearly constant. The deformation mode of the composites was quantitatively described by introducing a scalar parameter called constraint ratio.