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Vibration and damping analysis of doubly curved sandwich panels with viscoelastic core

Published online by Cambridge University Press:  04 July 2016

J. Vaswani ,
N. T. Asnani  and
B. C. Nakra
J. Vaswani
Affiliation:
Mechanical Engineering Department, Indian Institute of Technology, New Delhi
N. T. Asnani
Affiliation:
Mechanical Engineering Department, Indian Institute of Technology, New Delhi
B. C. Nakra
Affiliation:
Mechanical Engineering Department, Indian Institute of Technology, New Delhi
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Abstract

The governing differential equations of motion for flexural vibrations of a doubly curved sandwich panel consisting of stiff elastic face layers sandwiching soft viscoelastic core have been derived, considering extension and bending deformations of the face layers and shear deformations of the core, using variational principles. Solution for panel with simply supported edges is assumed in series summation form and the correspondence principle of linear viscoelasticity is applied for evaluation of resonance frequencies and associated system loss factors. The effects of variations of geometrical and material parameters on the resonance frequencies and associated system loss factors are reported.

Type
Research Article
Information
The Aeronautical Journal , Volume 88 , Issue 879 , November 1984 , pp. 395 - 403
Copyright
Copyright © Royal Aeronautical Society 1984 

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