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Free vibration of composite rectangular plates with rectangular cutouts
Affiliation:1. Department of Chemical and Process Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, UK;2. School of Chemical Engineering, National Technical University of Athens, Greece;1. Department of Mechanical Engineering, State University of New York at Stony Brook, NY, United States;2. Multiscale and Multiphysics Modeling Branch, NASA Glenn Research Center, Cleveland, OH 44135, United States;1. New Technologies Engineering Department, Shahid Beheshti University, G.C, Tehran, Iran;2. DICAM- Department, School of Engineering and Architecture, University of Bologna, Bologna 40126, Italy;1. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. School of Aerospace Engineering, Georgia Institute of Technology, GA 30332-0150, USA
Abstract:A simple numerical method based on the Rayleigh principle is presented for predicting the natural frequencies of composite rectangular plates which exhibit special and general orthotropy. The method is illustrated for simply-supported rectangular plates having central rectangular cutouts and double square cutouts. The results are compared with the reported finite element and analytical results.
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