セラミックス/金属接合残留応力分布の有限要素解析

概要

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Residual stress distributions of Si_3N_4/SUS304 joints with insert layer of copper were analyzed by a 2-dimensional thermo-elastic-plastic finite-element method (FEM). By superposition of plane-stress and plane-strain models, the analytical result showed good agreement with the measurement result of the X-ray diffraction method. It was found that residual stress was concentrated near the interface. The stress perpendicular to the interface is tensile at the ceramic side and compressive at the metal side. Stress singularities near the interface can be also studied by finite-element analysis. The result showed that the exponent of a stress singularity at an edge was smaller than that at the center of the specimen, although the intensity coefficient at the edge was larger.
一般社団法人日本機械学会の論文
1994-03-25