直交異方性異種接合材料の自由縁応力特異性とその消失

概要

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Free-edge stress singularity usually appears at the intersection of free surfaces and the interface of bonded dissimilar materials. Not only isotropic material but also anisotropic material is used for making a bonded dissimilar materials. In this study, free-edge stress singularity of bonded dissimilar orthotropic materials were investigated theoretically using the characteristic equation deduced in terms of Airy's stress function. The characteristic equation deduced in this study can be applied for the case when the wedge angles were not right angles. Stress distribution on the interface was calculated numerically by using the boundary element method. The values of the order of stress singularity determined by the boundary element method agreed well with the theoretical ones obtained using the characteristic equation. It was found that free-edge stress singularity disappeared for certain combinations of wedge angles of the pair of materials which had stress singularity when two materials were bonded at right angle to the free surfaces.
一般社団法人日本機械学会の論文
2004-12-25