接合体の熱応力の解析(II)

概要

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It is well known that large thermal stresses arise in a ceramic-metal joint with thermal expansion mismatch. Therefore, to avoid fracture of a joint, it has been recommended a "compressive joint" in which thermal expansion coefficient of a ceramic is smaller than that of a metal.<BR>A finite element calculation (F.E.C.), however, showed that a large tensile stress occurred even in a ceramic part of a compressive joint. We have already dealt with a special joint in which the values of the elastic constants of the ceramic are the same as those of the metal. The result of the calculation are found in qualitative agreement with F.E.C. In this paper, another stress analysis is carried out for a usual joint with different elastic constants, to obtain quantitative agreement with F.E.C.
社団法人粉体粉末冶金協会の論文