| Authors | Javad Jafari Fesharaki, Abbas Logman, Maryam Yazdipoor, Sa'id Golabi |
|---|---|
| Journal | Mechanics of Time-Dependent Materials |
| Presented by | University of Kashan |
| Page number | 41-53 |
| Serial number | 1 |
| Volume number | 18 |
| Paper Type | Full Paper |
| Published At | 2013-3-01 |
| Journal Grade | Scientific - research |
| Journal Type | Typographic |
| Journal Country | Netherlands |
| Journal Index | ISI |
Abstract
By using a method of successive elastic solution, the time-dependent creep behavior of a functionally graded hollow sphere under thermomechanical loads has been investigated. Based on volume percentage, the mechanical and thermal properties of material, except for the Poisson’s ratio, are assumed to be radially dependent. Total strains are assumed to be the sum of elastic, thermal and creep strains. Creep strains are temperature-, stress- and time-dependent. Using the Prandtl–Reuss relations and Sherby’s law, histories of stresses and strains are presented from their initial elastic values at zero time up to 30 years after loading. The results show that the creep stresses and strains change with time and material inhomogeneity has influence on thermomechanical creep behavior. The aim of this work was to understand the effect of creep behavior on a functionally graded hollow sphere subjected to thermomechanical load.