セラミックスと金属の接合部の信頼性評価 : 第2報,異材接合界面部の熱反応に対する接合体の形状変化の影響

概要

論文の詳細を見る
The bonding of ceramics and metals is an effective method for the use of ceramics as structural materials .Generally, there is a serious problem that a significant thermal stress concentration occurs in the ceramics owing to the different thermal properties of both materials. In the previous work, it was found that high axial stress is induced only in the very narrow region near the outer surface of the ceramics. In the present paper, the authors investigate how the thermal stress concentration is influenced by shape of the ceramics of a joint, using the thermoelastic-plastic finite element method. It is found that the stress concentration can be reduced by changing the shape of the ceramics, and that the maximum value of the axial stress as well as the principal stress in the joints with various shapes is estimated by a simplified theoretical analysis.
一般社団法人日本機械学会の論文
1988-12-25