Free vibration of symmetric laminated fiber reinforced plate with center circular hole

Abstract EN

The investigate of the free vibration of fiber reinforced (FR) plate has been studied.

The natural frequency of an FR plate depends on a variety of variables, including aspect ratio, size of hole, fiber orientation of the laminae that make up the laminate, and the boundary conditions.

These variables using related to the natural frequency of laminated plates by analyzing a number of laminated plates using the commercially available (ANSYS 9.0) finite element software.

From the results, it was found that the natural frequency of the FR plate of fixed–free boundary condition increase but simply support-free boundary condition decrease with incraseing the hole size for all values of aspect ratio, whereas the hole size increase the composite plates lose more materail and consequently lose more stiffness.