Analysis of damped composite sandwich plates using plate bending elements with substitute shear strain fields based on Reddy's higher-order theory
Analysis of damped composite sandwich plates using plate bending elements with substitute shear strain fields based on Reddy's higher-order theory
Two new C-0 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 fibre polyester resins for the skin and HEREX C70 PVC foam damping materials for cores are used to show the parametric effects of plate aspect ratio, length-thickness ratio on natural frequencies and loss factors. A consistent mass matrix is adopted in the present formulation. Both frequency-independent and frequency-dependent damping of viscoelastic materials are considered. The developed elements are free from spurious zero energy modes due to the assumed strain approach
damping, composite sandwich plates, assumed strain approach, higher order theory
591-606
Nayak, A.K.
20538650-e051-4cbc-803c-0398fc181aaf
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Moy, S.S.J.
d1b1f023-d32a-4b00-8a3f-17c89f91a51e
2002
Nayak, A.K.
20538650-e051-4cbc-803c-0398fc181aaf
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)
Analysis of damped composite sandwich plates using plate bending elements with substitute shear strain fields based on Reddy's higher-order theory.
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 216 (5), .
(doi:10.1243/0954406021525377).
Abstract
Two new C-0 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 fibre polyester resins for the skin and HEREX C70 PVC foam damping materials for cores are used to show the parametric effects of plate aspect ratio, length-thickness ratio on natural frequencies and loss factors. A consistent mass matrix is adopted in the present formulation. Both frequency-independent and frequency-dependent damping of viscoelastic materials are considered. The developed elements are free from spurious zero energy modes due to the assumed strain approach
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Published date: 2002
Keywords:
damping, composite sandwich plates, assumed strain approach, higher order theory
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Local EPrints ID: 22030
URI: http://eprints.soton.ac.uk/id/eprint/22030
ISSN: 0954-4062
PURE UUID: 1e69a3e5-c8d4-4da8-957a-6e4b2898e1c5
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Date deposited: 17 Mar 2006
Last modified: 15 Mar 2024 06:34
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Author:
A.K. Nayak
Author:
S.S.J. Moy
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