SYMPOSIA PAPER Published: 01 January 1974
STP35485S

A Correlation Study of Finite-Element Modeling for Vibrations of Composite Material Panels

Source

A correlation study has been made to evaluate the effectiveness of finite-element modeling for vibrations of composite material panels. The three types of composite material panels studied were: (1) Symmetrically laminated cross-ply panels, (2) unsymmetrically laminated cross-ply panels, and (3) a 1/6-scale sandwich wing model. Correlations of finite-element predictions for frequencies and vibration modes were made with Rayleigh-Ritz analyses and experimental data.

For the symmetrically laminated panels the finite-element representation predicted vibration modes very accurately. For the unsymmetrically laminated panels it was found that predictions using uncoupled finite-element plate bending elements did not give good agreement with experimental data. The constant-chord, swept-wing model was effectively analyzed by finite-element presentations using either sandwich elements or ribs and spars.

Author Information

Thornton, EA
Old Dominion University, Norfolk, Va.
Clary, RR
NASA Langley Research Center, Hampton, Va.
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Details
Developed by Committee: D30
Pages: 111–129
DOI: 10.1520/STP35485S
ISBN-EB: 978-0-8031-4639-6
ISBN-13: 978-0-8031-0308-5