A Layer-wise Analysis For Free Vibration Of Thick Composite Cylindrical Shells
K.H. Huang and A. Dasgupta
A semi-analytical, three-dimensional, layer-wise theory is proposed,
to solve for various orders of natural frequencies, and mode shapes of
thick, arbitrarily laminated, composite cylindrical panels with three-dimensional
boundary conditions at the four edges being any combination of free, simply
supported, clamped and guided, for each layer. The displacement field
is modeled by finite element interpolation shape functions along the thickness
direction and by beam functions in the two in-plane directions. Numerical
results from the present work are compared with those from first order
transverse shear deformation theory (FSDT) and higher order shear deformation
theory (HSDT). Results indicate that the present method predicts
the frequencies more accurately than either FSDT or HSDT. The present
study represents a significant improvement in the capability for modeling
complex three dimensional boundary conditions.
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