DYNAMIC ANALYSIS OF LAMINATED COMPOSITE PLATES

K. Maithry, B D V Chandra Mohan Rao

Abstract: In the recent years, the use of laminated composite plates has been increased considerably. Fiber reinforced composites are finding increasing applications in the aerospace, marine, transportation, electrical, chemical, construction and consumer goods industries. In many of these applications, the composites are often subjected to dynamic loads. Hence, the knowledge of dynamic behaviour of plates and shell structures is very essential for sound design. When such structures are subjected to dynamic loads, their behaviour is affected by excessive vibrations, higher displacements and accelerations which may deteriorate the structural performance. The dynamic response of laminated composite plates to excitations, varying arbitrarily with time is investigated in this paper. The laminated composite structures may sometimes be provided with different types of holes for the purpose of assembling the components and units inside the structure, for passing the cables and control mechanisms, for inspection, maintenance and attachment to other units. Rectangular laminated plates fixed along the edges with holes at different positions are investigated by maintaining the same length / height ratio and hole area ratio for different fiber orientations. The modeling and dynamic analysis of the laminated plates has been carried out using ANSYS 13.0 software. The most robust fiber orientation with respect to various response parameters is suggested.

Keywords: Laminated Composite Plates, Dynamic loads, Fiber orientation, Deflection.

DOI: https://doi.org/10.15623/ijret.2015.0425018