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Extensional Effects in Constrained Viscoelastic Layer Damping

Published online by Cambridge University Press:  07 June 2016

B C Nakra  and
P Grootenhuis
B C Nakra
Affiliation:
Indian Institute of Technology, Delhi
P Grootenhuis
Affiliation:
Imperial College, London
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Summary

The vibration damping in unsymmetrical, multi-layer beams is obtained by the combined effects of extensional and shear stresses in the viscoelastic layer. The shear stress distribution is not constant across such a layer, although previous work has ignored this. The error in an estimate based on the previous work of the overall loss factor can be large, in particular for the lower resonant modes of long beams with a stiff damping layer.

Information

Type
Research Article
Information
Aeronautical Quarterly , Volume 25 , Issue 3 , August 1974 , pp. 225 - 231
Copyright
Copyright © Royal Aeronautical Society. 1974

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References

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