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DQM-Based Thermal Stresses Analysis of a Functionally Graded Cylindrical Shell Under Thermal Shock |
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| Authors: | Jing-Hua Zhang Guang-Ze Li Shi-Rong Li Yong-Bin Ma |
| Affiliation: | 1. Department of Engineering Mechanics , Lanzhou University of Technology , Lanzhou , P. R. China zjhhrb@163.com;3. Department of Engineering Mechanics , Lanzhou University of Technology , Lanzhou , P. R. China;4. School of Civil Science and Engineering , Yangzhou University , Yangzhou , P. R. China |
| Abstract: | The transient thermal stresses of a functionally graded (FG) cylindrical shell subjected to a thermal shock are investigated. The dynamic temperature fields of FG shells are obtained by using the Laplace transform and power series method. The differential quadrature method is developed to obtain the transient thermal stresses by solving dynamic governing equations in terms of displacements. The effects of the material constitutions on the transient temperature and the thermal stresses are analyzed in the cases of obverse thermal shock and reverse thermal shock. It turns out that the thermal stresses could be alleviated by means of changing the volume fractions of the constituents. |
| Keywords: | Cylindrical shell Differential quadrature method Functionally graded materials Thermal shock Thermal stress |