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Dynamic Instability of Viscoelastic Plate in Supersonic Flow( Vol-3,Issue-2,February 2017 ) |
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Author(s): B. Sh. Usmonov |
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Keywords: |
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Viscoelasticity, nonlinear panel flutter, viscoelastic plate; integro-differential equation, Bubnov-Galerkin method. |
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Abstract: |
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The present work is investigating the aero-elastic instability of a viscoelastic plates under compressive forces. The Bubnov-Galerkin method used to solve the governing equations. The quasi-steady aerodynamic loadings are determined using linear piston theory. The nonlinear integro-differential equation of the plate is transformed into a set of nonlinear algebraic equations through a Galerkin approach. The resulting system of the equations is analytically solved. The influence of elastic and viscoelastic properties and the compressive load characteristicsof the plate material on the value of critical parameters are discussed. |
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