Thermo elastic- up to yielding behavior of three dimensional functionally graded cylindrical panel based on a full layer-wise theory. (15th January 2019)

• Record Type: Journal Article
• Authors: Khakpour Komarsofla, M.; Jedari Salami, S.; Shakeri, M.
• Is Part Of: Composite structures. Volume 208(2019)
• Page Start: 261
• Page End: 275
• Publication Date: 2019-01-15
• Subjects: Cylindrical panel -- Functionally graded materials -- Elastic-up to yielding analysis -- Full layer-wise theory -- Thermal load; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2018.10.010
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: As a first endeavor, the full layer-wise method is presented for elasto-up to yielding analysis of a functionally graded cylindrical panel with different boundary conditions and under steady state thermal and nonuniform mechanical loads. Static load and thermal field are applied in large and nonuniform scales which are acted on the inner and outer layers of the panel. Tresca and von Mises yield criteria are compared together and with TTO (Tamura–Tomota–Ozawa) model to find the yielded regions in the panel. The results of the used method are compared with a simulation using the commercial ABAQUS. The stress and temperature fields were expressed on the basis of an analytical solution using trigonometric terms for the full simply supported boundary conditions and simply-free boundary conditions and the derived results are presented graphically. Yielded areas vary by changing the geometry of boundary conditions and are closer to the supports. Both von Mises and Tresca criteria predicted same yielded region with the distinction that von Mises criterion is more conservative compared to Tresca criterion. Yield modes vary in different layers of the panel through its thickness and according to von Mises and Tresca yield criteria and the TTO model in this analysis, yield begins from the inner layer of the panel. By increasing the temperature, yield stress in the panel increased and by increasing FGM index and thickness of the panel, yield stress decrease in the panel.