Vibration Analysis Of Glass Epoxy Composite Plate With Variable No. Of Layers

Abstract

The composite materials are famous for high structural stiffness and less weight. Their mechanism allows the engineer to make variety in order to achieve the required performance . Thus, it is of fundamental importance to develop new materials and test them for performance, structural requirements, functional characteristics and restrictions of the production process. So some plates of different dimensions will be taken for analysis. Experimental dynamic tests will be carried out using specimens with different numbers of layers of fibers & different orientations. From the results, the influence of the fibers orientations & number of layers on the natural frequencies and modal damping will be investigated. Also FEM Results of steel plates will be compared with the composite plate results. To avoid structural damages caused by undesirable vibrations, it is important to determine: 1 The natural frequencies of the structure to avoid resonance; 2. The mode shapes to reinforce the most flexible points or to determine the right positions to reduce weight or to increase damping; The main objective of this work is to contribute for a better understanding of the dynamic behavior of components made from fiber reinforced composite materials, specifically for the case of plates. This gives the engineer a freedom to design the laminate - the possibility to change fiber orientations in order to get a more or less damped structure.