Thermal stress analysis of wrapped pipes in steady temperature state
- Yamanashi Univ., Kofu (Japan). Dept. of Mechanical Engineering
Thermal stress distributions of wrapped pipes subjected to heat loading are analyzed using an axisymmetrical theory of elasticity. The wrapped pipes consist of two finite hollow pipes of dissimilar material. In the numerical calculations, the effects of the thermal expansion coefficient and Young`s modulus on the interface thermal stress distributions are investigated. The residual thermal stress distributions are examined in the case of alumina-metal wrapped pipes. Experiments on the strains were conducted. It is found that the interface thermal stresses increase with an increase of the ratios of the thermal expansion coefficient and of Young`s modulus between the inner and the outer pipes. Moreover, it is demonstrated that the residual thermal stress in the case of alumina-metal wrapped pipes decreases as Young`s modulus of the outer pipe decreases and the thermal expansion coefficient of the outer pipe increases. The analytical results show good agreement with the experiments.
- OSTI ID:
- 124727
- Report Number(s):
- CONF-950740--; ISBN 0-7918-1332-0
- Country of Publication:
- United States
- Language:
- English
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