Reliability Evaluation System of Joints of Fine-Ceramics and Metal

采用热弹塑性有限元分析方法，对异种材料连接界面的热应力分布特性进行了初步研究。通过分析发现，高的热应力是由简化的理论分析近似估算的，进而探讨了陶瓷形状对降低热应力集中的影响，并通过简化的理论分析估算了不同形状接头的轴向应力和压应力的最大值。

A fundamental study on the thermal stress distribution characteristics to the interface of dissimilar material joint is carried out by using thermoelastic-plastic finite element analysis. Through this analysis, it is found that the high thermal stress is approximately estimated by a simplified theorotical analysis.Further, it is investigated how the thermal stress concentration is influenced tration can be reduced by changing the shape of the ceramics, and that the maximum value of the axial stress as well as the proncipal stress in the joints with various shapes is also estimated by the simplified theoretical analysis.