| Effect of porosity on the divergence and flutter of FG plates under thermal loading |
| کد مقاله : 1046-CMBM2022 |
| نویسندگان |
|
مهدیه عبدالهی *1، علیرضا سعیدی2، رضا بهاالدینی3 1گروه مکانیک، دانشکده فنی و مهندسی، دانشگاه شهید باهنر کرمان 2مهندسی مکانیک، دانشکده فنی و مهندسی،دانشگاه شهید باهنر کرمان، کرمان، ایران 3شرکت توسعه آهن و فولاد گل گهر، سیرجان، کرمان، ایران |
| چکیده مقاله |
| In this paper, the divergence and flutter of functionally graded (FG) plates with porosity under supersonic airflow and thermal loading are investigated. Three types of thermal loading in the thickness direction of the plate as constant, linear and nonlinear temperature distributions are considered. The material properties of the plate vary continuously from ceramic to metal with porosity through the thickness according to the modified power-law model. Applying the Hamilton’s principle, the governing equations and the associated boundary conditions are derived based on the first-order shear deformation theory (FSDT) and linear piston theory. Also, the stability equations are obtained by using the principle of minimum total potential energy and adjacent equilibrium criterion. These equations are discretized by generalized differential quadrature (GDQ) method. Consequently, the effects of mechanical and thermal parameters such as porosity, power-law index, thermal loading, and boundary conditions on stability region of plate are studied in detail. This results show that porosity has a significant effect on the stability region. |
| کلیدواژه ها |
| Flutter, Porous, FG plate, Thermal loading |
| وضعیت: پذیرفته شده برای ارائه شفاهی |