ESDU 83036:2012
$22.75
Natural Frequencies of Rectangular, Especially Orthotropic Laminated Plates
| Published By | Publication Date | Number of Pages |
| ESDU | 2012-12 | 19 |
ESDU 83036 is accompanied by a computer program (ESDUpac A8336)
for estimating the lower natural frequencies of the initially
unstressed plates. The calculation procedure is particularly
applicable to fibre-reinforced composite laminated plates.
Specially orthotropic plates are balanced laminates, in which
layers of equal thicknesses, elastic properties and with the same
orientation of their principal axes of orthotropy are symmetrically
disposed about a central plane. A precise definition of this class
of plates is given in ESDU 83035. The program uses a Rayleigh-Ritz
analysis method to evaluate natural frequencies of flat plates
having any combination of simply-supported and clamped edge
conditions. An approximate graphical procedure is also provided for
the estimation of the fundamental natural frequency of slightly
curved laminated plates. Practical worked examples illustrate the
use of the data.
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