Abstract
Natural frequencies and mode shapes of axisymmetric and non-axisymmetric vibration of stepped thin circular plates were calculated with self-programmed program. Three-node annular elements were used in the program.Results of axisymmetric vibration obtained by the self-programmed program and those by ANSYS program were compared.It shows that self-programmed program can calculate axisymmetric vibration as well as non-axisymmetric vibration.The accuracy of self-programmed program is higher than ANSYS method.
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