S0303-3-2 周期的加熱を受ける中空円筒の平面軸対称非定常熱応力([0303-3]材料機能性と強度に及ぼす環境と場の影響に関する弾性数理解析(3))

概要

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Thermal stresses are repeatedly applied to members due to temperature cycle of heating and cooling. Then, the members often fail due to the repeated stresses as a result of inelastic behaviors and fatigue deformations. This study is concerned with a plane axisymmetrical transient thermal stress problem of a hollow circular cylinder under a cyclic heating. Analytical solutions of temperature change, displacement and stress components in the cylinder are derived. Furthermore, numerical calculations are performed under the condition that inner surface of the cylinder is exposed to a sinusoidally varying temperature, outer one is kept at typical temperature. Repeats of tension and compression in thermal stresses are applied to the cylinder, which are resulted from the temperature cycle. In particular, it's found that normal stresses in circumferential and axial directions of the cylinder are much larger.
一般社団法人日本機械学会の論文
2010-09-04