Basic Characteristic on Distribution of Thermal Stresses near Apex in Dissimilar Materials

Abstract

The stress fields near the apex in dissimilar materials composed of three isotropic homogeneous wedges with arbitrary angles subjected to surface tractions or thermal load are expressed by a linear combination of the singular solutions, no singularity ones and the particular ones. For the cases where the stresses near the apex of dissimilar materials subjected to thermal load represent the singularities of type γ^p-1, type log γ and no singularity, the stress distributions are examined theoretically and numerically. Moreover, the different influences of solutions with no singularity and the particular solutions on the stresses near the apex are theoretically clarified. It was examined how the characteristic of stress singularity clarified using FEM is changed by whether no singularity solutions and the particular solutions are taken into consideration in analyzing the stress singularity. Furthermore, the notable results on the stress singularity of type log γ in dissimilar materials formed from two rectangular wedges are shown.