Supersonic Flutter of Laminated Curved Panels

  • M. Ganapathi Institute of Armament Technology, Pune
  • T. K. Varadan Indian Institute of Technology Madras, Chennai
Keywords: Flutter boundary, Flutter analysis, Transverse shear deformation, Lami nated composite curved panels, Supersonic flutter analysis

Abstract

Supersonic flutter analysis of laminated composite curved panels is investigated using doubly-curved, quadrilateral, shear flexible, shell element based on field-consistency approach. The formulation includes transverse shear deformation, in-plane and rotary inertias. The aerodynamic force is evaluated using two-dimensional static aerodynamic approximation for high supersonic flow. Initially, the model developed here is verified for the flutter analysis of flat plates. Numerical results are presented for isotropic, orthotropic and laminated anisotropic curved panels. A detailed parametric study is carried out to observe the effects of aspect and thickness ratios, number of layers, lamination scheme, and boundary conditions on flutter boundary.

Author Biographies

M. Ganapathi, Institute of Armament Technology, Pune
Institute of Armament Technology, Pune
T. K. Varadan, Indian Institute of Technology Madras, Chennai
Department of Aerospace Engineering, Indian Institute of Technology Madras, Chennai
Published
2013-01-01
How to Cite
GanapathiM., & VaradanT. (2013). Supersonic Flutter of Laminated Curved Panels. Defence Science Journal, 45(2), 147-159. https://doi.org/10.14429/dsj.45.4114
Section
Applied Physics & Fluid Dynamics