Author: Junaid Kameran Ahmed
Abstract: By depending on 1st order shear deformation theory, a Graphite Epoxy composite plate has been analyzed dynamically in the present work by using a quadratic element (8-node diso parametric). Every node in this element has 6-degree of freedom (movement in x,y and z axis and rotation about x ,y and z axis ). The dynamic analysis covered parametric studies on a composite laminated plate (square plate) to determine its effect on the natural frequency of the plate. The parametric study was represented by a set of changes (layer number, boundary conditions, layer orientation, and the symmetry of layer orientation) and the plates were simulated by using ANSYS package 12. The boundary conditions considered in this study, at all four edges of the plate, are simply supported and clamped boundary condition. The results obtained from ANSYS program show that the natural frequency for both simply supported increase through increasing the number of layers. And it is observed that the natural frequency of a composite laminated plate will change with the change of ply orientation.
Keywords: Laminated Plate, Orthotropic Plate, Square Plate, (Free Vibration) Natural Frequency, Composite (Graphite/ Epoxy)
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Ahmed, J. J., Agarwal, V.C., Pal, P., & Srivastav, V. (2013). Static and dynamic analysis of composite laminated plate. International Journal of Innovative Technology and Exploring Engineering, 3, 56-60.
Crawley, E.F. (1979). The natural modes of graphite/epoxy cantilever plates and shells. Journal of Composite Materials, 13, 195.
Desai, Y. M., Ramtekkar, G. S., & Shah, A. H. (2003). Dynamic analysis of laminated composite plates using a layer-wise mixed finite element model. Compos Structure, 59, 237-249.
Jian, W. S., Akihiro, N., & Hiroshi, K. (2004). Vibration analysis of fully clamped arbitrary laminated plate. Composite Structures 63, 115–122.
Kim, M. J., & Gupta, A. (1990). Finite element analysis of free vibrations of laminated composite plates. The International Journal of Analytical and Experimental Modal Analysis, 5(3), 195-203.
Koo, K. N., & Lee, I. (1993). Vibration and damping analysis of composite laminates using shear deformable finite element. AIAA Journal, 31(4), 728-735.
Narita, Y., & Leissa, A.W. (1990). Free Vibration Analysis of Cantilevered Composite Rectangular Plates. Japan Society for Composite Materials, Proceedings of the 5th Japan-U.S. Conference on Composite Materials, Tama-City, Tokyo, pp. 679-686.
Qatu, M, S., & Leissa, A. W. (1991). Natural frequencies for cantilevered doubly- curved laminated composite shallow shells. Composite Structures, 17, 227-255.
Soares, M., Moreira de Freitas, C. M., Araujo, M.J., & Pedersen, P. (1993). Identification of materials properties of composite plate specimen. Compos Struct. 25(1-4), 277-285.