Panel flutter analysis of cracked functionally graded plates in yawed supersonic flow with thermal effects

Khalafi, Vahid; Fazilati, Jamshid

doi:10.1016/j.apm.2021.07.043

Cited by 12 publications

(1 citation statement)

References 31 publications

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“…From these results, it can be concluded that the use of Kirchhoff sheet hypothesis, first order piston theory and DQM method along with the dimensions of the specified aluminum sheet is appropriate and accurate to investigate the flutter phenomenon in the desired conditions. 11 Clamp-clamp-clamp-clamp 12 Clamp-clamp-free-free 13 Clamp-clamp-clamp-free 14 Clamp-free-free-free 15…”

Section: Discussionmentioning

confidence: 99%

Aerodynamic modeling and calculating the flutter speed of a rectangular plate in supersonic air flow

nazemizadeh,

Samadi Foroushan,

mohammadi ghanaghestani

2023

MASM

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The presented paper investigates the flutter phenomenon in a rectangular-shaped plate in supersonic air flow. First, the phenomenon of flutter and its identification method based on the analysis of eigenvalues are presented. Then, using the assumptions of Kirchhoff plate, the plate motion equation is derived and coupled with the first-order piston aerodynamic model. Next, the coupled structure-fluid equation is solved in matrix form using the differential quadrature method (DQM). Using the DQM numerical method in matrix form provides advantages such as high accuracy for solving the flutter problem. The obtained results show that the first phenomenon of flutter in an aluminum plate with a length and width of 1 meter and a thickness of 5 mm with clamped-free-clamped-free boundary conditions occurs in dimensionless dynamic pressure 617 (equivalent to Mach 3.395). The presented formulation can be used as a benchmark for solving and calculating the flutter speed of various objects in the supersonic air flow.

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