A numerical study on flow-induced instabilities of supersonic FG-CNT reinforced composite flat panels in thermal environments
作者： Hamed Asadi , Milad Souri , Quan Wang
DOI: 10.1016/J.COMPSTRUCT.2017.02.003
关键词:
摘要: Abstract In this research, the aerothermoelastic behaviors of supersonic functionally graded carbon nanotube reinforced composite (FG-CNTRC) flat panels in thermal environments are scrutinized. The dynamic model FG-CNTRC panel is developed on basis first-order shear deformation theory incorporating von Karman geometrical nonlinearity. thermomechanical properties nanotubes and polymer matrix assumed to be temperature-dependent. aerodynamic pressure calculated according piston theory. Adopting discrete singular convolution method, equations motion boundary conditions converted into a set algebraic equations. Ample numerical results presented highlight responses considering various influential parameters such as CNT volume fraction distribution, conditions, environments, Mach number. reveal that distribution play key role enhancing panels. It also found presence plays an essential not only onset aerothermal buckling instability, but changing vibration mode shapes
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