軸対称異種材料接合体の残留応力に及ぼす温度場の影響 : 定傾斜温度分布状態の弾性解析

概要

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When dissimilar materials are joined at elevated temperature, residual stress is generated around the bonding interface area. Because of the stress concentration at the interface, the strength of the joint is not as great as expected. Many attempts have been made to reduce the residual stress value and to change the residual stress distribution. Many investigations using the finite-element method (FEM) have been carried out to estimate the effects of residual stress on the joining process under a homogeneous thermal field. In this works, the thermal residual stress and the strain were analyzed with FEM under thermal elastic conditions. Namely, numerical analysis was carried out for an electrical conductive ceramic of TiB_2-Ni joint under an axisymmetric condition. It was found that the principal residual stress at the edge of the bonding interface was affected by the difference in elevated temperature between the inner and outer sections of the joining materials.
1995-06-25