Title page for ETD etd-05042006-164514
|Type of Document
||Abdelnaser, Ahmad Shehadeh
||Random vibrations of composite beams and plates
|Day, Martin V.
|Heller, Robert E.
|Mook, Dean T.
- Girders Vibration.
- Composite construction.
|Date of Defense
The response characteristics of beams and plates made from composite laminates
are strongly affected by the shear deformations of their layers. However,
incorporation of the shear deformation further complicates the equations of motion
and their analysis. As a result the vibration analysis of such structures have been
limited to simple free vibration studies such as determination of their frequencies.
The forced vibration problems of these structures have been solved by exact
methods for only some very simple cases. In this study, a generalized modal
approach is presented to solve more general vibration problems of composite beams
and plates. The coupled systems of partial differential equations, representing the
equations of motion, are uncoupled into modal equations by utilizing the
eigenfunctions of the system and its adjoint. A method is presented to obtain these
eigenfunctions for beams with arbitrary boundary conditions and for plates with
Levy-type boundary conditions. The forced vibration solutions obtained by this
method are then used to calculate the random response characteristics of beams and
plates subjected to spatially and temporally correlated random loads.
|| Approximate Download Time
| 28.8 Modem
|| 56K Modem
|| ISDN (64 Kb)
|| ISDN (128 Kb)
|| Higher-speed Access
next to an author's name indicates that all
files or directories associated with their ETD
are accessible from the Virginia Tech campus network only.
If you have questions or technical
problems, please Contact DLA.