Sang-Lae Lee and Ji-Hwan Kim
Thermal Stability Boundary of FG Panel under Aerodynamic Load
383 - 388
2007
1
8
International Journal of Aerospace and Mechanical Engineering
https://publications.waset.org/pdf/13268
https://publications.waset.org/vol/8
World Academy of Science, Engineering and Technology
In this study, it is investigated the stability boundary of
Functionally Graded (FG) panel under the heats and supersonic
airflows. Material properties are assumed to be temperature
dependent, and a simple power law distribution is taken. Firstorder
shear deformation theory (FSDT) of plate is applied to model the
panel, and the vonKarman strain displacement relations are
adopted to consider the geometric nonlinearity due to large
deformation. Further, the firstorder piston theory is used to model the
supersonic aerodynamic load acting on a panel and Rayleigh damping
coefficient is used to present the structural damping. In order to find a
critical value of the speed, linear flutter analysis of FG panels is
performed. Numerical results are compared with the previous works,
and present results for the temperature dependent material are
discussed in detail for stability boundary of the panel with various
volume fractions, and aerodynamic pressures.
Open Science Index 8, 2007