Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14597
Title: Nonlinear random response of cylindrical panels to acoustic excitations using finite element modal method
Authors: Lee, YY
Ng, CF
Guo, X
Keywords: Acoustic excitation
Curved panel
Finite element
Modal coordinates
Nonlinear random vibration
Issue Date: 2003
Source: Nonlinear dynamics, 2003, v. 31, no. 3, p. 327-345 How to cite?
Journal: Nonlinear Dynamics 
Abstract: This paper investigates large amplitude multi-mode free vibration and random response of thin cylindrical panels of rectangular planform using a finite element modal formulation. A thin laminated composite doubly curved element is developed. The system equation in structural nodal DOF is transformed into the modal coordinates by the using the modes of the underlying linear system. The nonlinear stiffness matrices are also transformed into nonlinear modal stiffness matrices. Numerical integration is employed to determine free vibration and random response. Single-mode free vibration results are compared with existing classical analytical solutions to validate the nonlinear modal formulation. Nonlinear random analysis results for cylindrical panels have shown that the root mean square of panel deflections could be larger than those obtained using the linear structure theory. Time histories, probability distribution functions, power spectral densities, and phase plane plots are also presented.
URI: http://hdl.handle.net/10397/14597
ISSN: 0924-090X
DOI: 10.1023/A:1022908402329
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