ASYMPTOTIC SOLUTIONS OF TRANSIENT TEMPERATURE AND THERMAL STRESSES FOR A SURFACE-CRACKED HOLLOW CYLINDER SUBJECTED TO THERMAL SHOCK
作者:
Xue-jun Fan,
Shou-wen Yu,
期刊:
Journal of Thermal Stresses
(Taylor Available online 1991)
卷期:
Volume 14,
issue 1
页码: 19-31
ISSN:0149-5739
年代: 1991
DOI:10.1080/01495739108927048
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The transient temperature and stress fields in a hollow cylinder with an axial surface crack subjected to thermal shock are considered. It is found that the temperature boundary effect exists in a thin layer close to the cooled surface, if the nondimensional Fourier number is not very large. For the third kind of boundary condition ( convection boundary condition) due to thermal shock on the inner surface, the asymptotic solutions of temperature fields are deduced for various values of Biot number. The resulting thermal stresses in the uncracked cylinder, which are necessary for the determination of the stress intensity factor, are solved by quasi-static formulation. By introducing the line spring model considering the arbitrary loads on crack surfaces, the numerical results of the stress intensity factors for a semi-elliptical axial surface crack are obtained as a function of Fourier number and the parametric angle of ellipse for various values of Biot number.
点击下载:
PDF (283KB)
返 回