Damping prediction of composite sandwich plates using assumed strain plate bending elements based on Reddy's higher order theory
Damping prediction of composite sandwich plates using assumed strain plate bending elements based on Reddy's higher order theory
Two new C° assumed strain finite element formulations of Reddy’s higher order theory are used to determine the natural frequencies and loss factors of layered anisotropic composite and sandwich plates. Material properties typical of glass fiber polyster resins for skin and PVC foam damping material for the core are used to show the parametric effects of plate aspect ratio, length to thickness ratio on the natural frequencies and loss factors. A consistent mass matrix is adopted in the present formulation. Both linear and non-linear damping are considered. The results presented in this investigation should be useful in better understanding the behaviour of damped sandwich composite plates and potentially beneficial for designers of sandwich structures.
damping, compsite sandwich plates, assumed strain approach, higher order theory
Nayak, A.K
729d389e-4bfc-48a0-b13f-5a32de741940
Shenoi, R.A
a37b4e0a-06f1-425f-966d-71e6fa299960
Moy, S.S.J.
d1b1f023-d32a-4b00-8a3f-17c89f91a51e
April 2002
Nayak, A.K
729d389e-4bfc-48a0-b13f-5a32de741940
Shenoi, R.A
a37b4e0a-06f1-425f-966d-71e6fa299960
Moy, S.S.J.
d1b1f023-d32a-4b00-8a3f-17c89f91a51e
Nayak, A.K, Shenoi, R.A and Moy, S.S.J.
(2002)
Damping prediction of composite sandwich plates using assumed strain plate bending elements based on Reddy's higher order theory.
43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Denver, USA.
21 - 24 Apr 2002.
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Conference or Workshop Item
(Paper)
Abstract
Two new C° assumed strain finite element formulations of Reddy’s higher order theory are used to determine the natural frequencies and loss factors of layered anisotropic composite and sandwich plates. Material properties typical of glass fiber polyster resins for skin and PVC foam damping material for the core are used to show the parametric effects of plate aspect ratio, length to thickness ratio on the natural frequencies and loss factors. A consistent mass matrix is adopted in the present formulation. Both linear and non-linear damping are considered. The results presented in this investigation should be useful in better understanding the behaviour of damped sandwich composite plates and potentially beneficial for designers of sandwich structures.
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Published date: April 2002
Additional Information:
AIAA 2002-1243
Venue - Dates:
43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Denver, USA, 2002-04-21 - 2002-04-24
Keywords:
damping, compsite sandwich plates, assumed strain approach, higher order theory
Identifiers
Local EPrints ID: 53434
URI: http://eprints.soton.ac.uk/id/eprint/53434
PURE UUID: 7da0e22c-fe29-4f16-bf24-a1efa4410fef
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Date deposited: 30 Jul 2008
Last modified: 08 Jan 2022 07:05
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Contributors
Author:
A.K Nayak
Author:
S.S.J. Moy
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