異材界面の温度不連続による熱応力とその特異性(<小特集>先進材料と信頼性解析・評価)

概要

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A thermal stress problem of a coated half-space due to a temperature discontinuity on the interface is solved exactly using the two-dimensional thermoelastic theory. Stress singularities at the point of discontinuity of temperature are obtained in closed form. The results show that the normal stresses have jumps of the inverse tangent type and the shear stress has singularity of the logarithmic type. From the comparison with the singularities of the corresponding problem of a point heat source at the interface, the important result is obtained that the types of singularities for the two problems are different but the intensities are the same. In other words, the types of singularities depend on the type of loading but their intensities depend only on the combinations of materials and do not depend on the type of thermal loading.
一般社団法人日本機械学会の論文
1995-09-25