異種材料接合界面の三次元応力解析

概要

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The stress distribution introduced in joined dissimilar plates under tension was calculated from two-dimensional (2-D : the plane stress and plane strain states) and three-dimensional (3-D) elastic stress analyses using the finite-element method. A silicon nitride plate joined to copper plate was used. In the interfacial region of the composite specimen, a high stress concentration was found to occur, distributed three-dimensionally. Particularly, at the center of the specimen, the stresses, σ_x, in the direction of the applied stress, calculated from the 2-D and 3-D stress analyses, distributed quite differently near the interface. However, at a further distance from the interface, they agreed more closely. The highest stress, σ_x, appeared at the corners of the silicon nitride plate adjacent to the interface. Near the interface in the cross section of the specimen, the stresses calculated from the 3-D stress analysis varied rapidly, in contradiction to the assumption made in the 2-D analysis.
一般社団法人日本機械学会の論文
1992-11-25