DYNAMIC PERFORMANCE OF LAMINATED COMPOSITE PLATES WITHOUT HOLE

Sagar Umatar, Vinayak Kallannavar, Vinayak Ratan, Anil Shirahatti

Abstract: Composite laminates are assembly of several fiber layers, which when combined together will provide the required properties to the composite and yield good weight to strength ratio and stiffness to density ratio. Composite materials are often subjected to vibration used in various fields. In this study, an effort has been made to know the variation of natural frequency of composite plates without hole for three different materials (Glass-Epoxy, Boron-Epoxy and Graphite-Epoxy). Modal analysis is carried out for composite plates for all the three materials without hole by considering various fiber orientations subjected to different boundary conditions. Further, the study was carried out by considering different aspect ratios to understand the variation of natural frequency on composite plate. The analysis was carried out using ANSYS 14.5 simulation tool. It was found out that composite plate had higher natural frequency for [90/45]7 fiber orientation for all materials.

Keywords: Modal analysis, natural frequency, Glass-Epoxy, Boron-Epoxy, Graphite-Epoxy, ANSYS 14.5

DOI: https://doi.org/10.15623/ijret.2018.0707021