Simulation of Stress Distribution at the Periphery of a Elliptic Inclusion (Simulation of Stress Distribution at the Periphery of the Inclusions by Tension Test (The 2nd Report))

Abstract

Stress distribution at the periphery of the elliptic inclusion model with prescribed various values of Young's modulus was simulated and discussed by using the finite element method under the assumptions that the inclusion was in aluminum alloy matrix loaded with various stresses below the yield point of the aluminum alloy prescribed and the variation of the form and size of the elliptic inclusion model. Obtained conclusions were as follows: (1) In the case of the elliptic inclusion with lower Young's modulus, stress concentration behaviour in the periphery of the inclusion was substantially affected by the relative locational relationships between the stress loading direction and the position of the elliptic inclusion. (2) In the case of an inclusion where the Young's modulus was higher than that of the matrix, stress concentration in the periphery of the inclusion was suggested to be rather remarkably affected by the shape of the inclusion and the relative locational relationships between the stress loading direction and the position of the elliptic inclusion rather than by the size of the inclusion.