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Advances in Acoustics and Vibration
Volume 2012, Article ID 191042, 9 pages
Research Article

Analysis of Static Instability of an Asymmetric, Rotating Sand-Wich Beam

1Mechanical Engineering Department, VSSUT Burla, Orissa 768018, India
2Mechanical Engineering Department, IIT Kharagpur, Kharagpur 721302, India

Received 16 May 2011; Accepted 8 August 2011

Academic Editor: Joseph CS Lai

Copyright © 2012 P. R. Dash et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The static stability of an asymmetric, rotating sandwich beam subjected to an axial pulsating load has been investigated for pinned-pinned and fixed-free boundary conditions. The equations of motion and associated boundary conditions have been obtained by using the Hamilton's energy principle. Then, these equations of motion and the associated boundary conditions have been nondimensionalised. A set of Hill's equations are obtained from the nondimensional equations of motion by the application of the general Galerkin method. The static buckling loads have been obtained from Hill's equations. The influences of geometric parameters and rotation parameters on the nondimensional static buckling loads have been investigated.