Techno Press


Coupled Systems Mechanics   Volume 6, Number 4, December 2017, pages 439-464
DOI: http://dx.doi.org/10.12989/csm.2017.6.4.439
 
The influence of the initial strains of the highly elastic plate on the forced vibration of the hydro-elastic system consisting of this plate, compressible viscous fluid, and rigid wall
Surkay D. Akbarov, Meftun I. Ismailov and Soltan A. Aliyev

 
Abstract     [Full Text]
    The hydro-elastic system consisting of a pre-stretched highly elastic plate, compressible Newtonian viscous fluid, and the rigid wall is considered and it is assumed that on the plate a lineal-located time-harmonic force acts. It is required to investigate the dynamic behavior of this system and determine how the problem parameters and especially the pre-straining of the plate acts on this behavior. The elasticity relations of the plate are described through the harmonic potential and linearized (with respect to perturbations caused by external time-harmonic force) form of these relations is used in the present investigation. The plane-strain state in the plate is considered and the motion of that is described within the scope of the three-dimensional linearized equations of elastic waves in elastic bodies with initial stresses. The motion of the fluid is described by the linearized Navier-Stokes equations and it is considered the plane-parallel flow of this fluid. The Fourier transform with respect to the space coordinate is applied for a solution to the corresponding boundary-value problem. Numerical results on the frequency response of the interface normal stress and normal velocity and the influence of the initial stretching of the plate on this response are presented and discussed. In particular, it is established that the initial stretching of the plate can decrease significantly the absolute values of the aforementioned quantities.
 
Key Words
    compressible viscous fluid; highly elastic plate; initial strain; frequency response; forced vibration; rigid wall
 
Address
Surkay D. Akbarov:
1) Yildiz Technical University, Faculty of Mechanical Engineering, Department of Mechanical Engineering, Yildiz Campus, 34349, Besiktas, Istanbul, Turkey
2) Institute Mathematics and Mechanics of the National Academy of Sciences of Azerbaijan, AZ141, Baku, Azerbaijan
Meftun I. Ismailov: Nachicivan State University, Faculty of Mathematics, Nachicivan, Azerbaijan
Soltan A. Aliyev: Yildiz Technical University, Faculty of Mechanical Engineering, Department of Mechanical Engineering, Yildiz Campus, 34349, Besiktas, Istanbul, Turkey
 

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