The Effect Of Fiber Orientation And Number Of Layer On The Natural Frequency Of Composite Laminated Plate

Kameran Ahmed, Junaid and M.E. Taha, Omer and H. Ali, Barham and Tareq, Mohammed (2016) The Effect Of Fiber Orientation And Number Of Layer On The Natural Frequency Of Composite Laminated Plate. Second International Engineering Conference On Developments in Civil & Computer Engineering Applications 2016.

Text (Research Article) IEC2016.pdf - Published Version Download (21MB)

Abstract

A Graphite Epoxy composite plates has been analyzed dynamically in the present work by using a quadratic element (8-node diso parametric) by depending on 1st order shear deformation theory, every node in this element has 6-degree of freedom (displacement in x,y and z axis and twist about x ,y and z axis ) .The dynamic analysis in the present work covered parametric studies on a composite laminated plate (square plate) to determine its effect on the natural frequency of the plate. The parametric study represented by set of changes (layer number, boundary conditions, layer orientation) the plates have been simulated by using ANSYS package 12. The boundary conditions considered in this study, at all four edge of the plate, are simply supported and clamped boundary condition. The results obtained from ANSYS program shows that the natural frequency for both fixed and simply supported increase with increasing the number of layers, but this increase in the natural frequency for the first five modes will be neglected after 10 layers. And it is observed that the natural frequency of a composite laminated plate will change with the change of ply orientation, the natural frequency increase and it will be at maximum with angle 45 of ply for simply supported laminated plate, and maximum natural frequency will be with cross ply (0 / 90)for fixed laminated composite plate.

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