Abstract
The study of the dynamic behavior of annular discs is important, as several machine components such as flywheels, clutch plates, circular saw plates etc. can be considered as annular discs for the purpose of analysis. The work presented in this paper is a modal analysis of annular disc structure by using finite element analysis software (ANSYS).Natural frequencies and maximum deformation of structure of three different materials are used for comparative study of the variation in characteristics of the structure for various ratios of inner to outer radius conditions. It is found that as aspect ratio approaches to unity (one) natural frequency approaches to its maximum value. Also the natural frequencies and deformation increases with increasing number of nodal diameters. Based on the results of finite element analysis of the three materials it is compared and concluded that the Nimonic 90 disc exhibits good behavior in case of natural frequencies and MP35N disc exhibits good behavior in case of deformation as the deformation is less in this compared to the other two materials.
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