Modal Analysis of Circular Plates

Abstract:

In engineering practice, some of the structural elements take the form of a thin planar plate. For such elements, it is sometimes important to consider dangerous condition of resonance. A structural element cannot operate in the range of resonant frequencies. It is therefore necessary to determine natural frequencies and normal modes of vibration of such structural elements. Parts of the paper are the results of the analysis of natural frequencies and normal modes of vibration using FEM program Cosmos. The subject of the analysis was a thin flat circular plate considered in three modifications, i.e. free thin circular plate without hole, a thin circular plate without hole, clamped on the outer periphery, a thin circular plate with a hole, clamped on the outer and inner circumference. At the same time, Chladni patterns were obtained. They were created using the Matlab system and extraction of the outputs of the Cosmos program.

• Periodical: Applied Mechanics and Materials (Volume 611)
• Pages: 245-251
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.611.245
• Online since: August 2014
• Authors: Jozef Bocko, Peter Sivák*, Ingrid Delyová, Štefánia Šelestáková
• Keywords: Circular Plates, Modal Analysis, Normal Mode of Vibration, Resonance Frequency, Self-Oscillation

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