Techno Press
Techno Press

Steel and Composite Structures   Volume 22, Number 6, December30 2016, pages 1261-1280
DOI: http://dx.doi.org/10.12989/scs.2016.22.6.1261
 
Nonlinear vibration of laminated composite plates subjected to subsonic flow and external loads
Hamed Norouzi and Davood Younesian

 
Abstract     [Full Text]
    We study chaotic motion in a nonlinear laminated composite plate under subsonic fluid flow and a simultaneous external load in this paper. We derive equations of motion of the plate using the von-Kármán\'s hypothesis and the Hamilton\'s principle. Galerkin\'s approach is adopted as the solution method. We then conduct a divergence analysis to obtain critical velocities of the transient flow. Melnikov\'s integral approach is used to find the critical parameters in which chaos takes place. Effects of different parameters including the aspect ratio, plate material and the ply angle in laminates on the critical flow speed are investigated. In a parametric study, we show that how the linear and nonlinear stiffness of the plate and the load frequency and amplitude would influence the chaotic behavior of the plate.
 
Key Words
    composite laminated plates; vibration; subsonic flow; chaos; Melnikov\'s method
 
Address
(1) Hamed Norouzi, Davood Younesian:
School of Railway Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran;
(2) Davood Younesian:
Department of Mechanical Engineering, UC Berkeley, Berkeley, CA 94720-1740, USA.
 

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