セラミックスと金属のろう付けによる接合材の残留応力解析

概要

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The residual stress distribution of a ceramic-metal joint specimen was determined by both the two-and three-dimensional thermoelastoplastic stress analyses using the finite-element method (FEM) and the X-ray method. The specimen was prepared by brazing silicon-nitride and carbon-steel rectangular plates. The highest tensile stress σ_x perpendicular to the interface appeared at the corner of the silicon nitride adjacent to the interface. The maximum compressive stress σ_y parallel to the interface occurred at the center of the interface of the silicon nitride. In the steel plate, the stress distribution was reversed. The measured stress distribution was similar to that calculated from the three-dimensional FEM, but it differed remarkably from the result by the two-dimensional FEM especially at the center of the specimen. This is because the sharp stress concentration occurs and the stress distributes three-dimensionally at the interface.
一般社団法人日本機械学会の論文
1991-04-25