Abstract

Abstract This paper presents an approach for the derivation of dynamic mass, gyroscopic and stiffness matrices for rotor dynamics analyses. The axial, torsional and bending dynamic stiffness matrices are deduced from transfer matrices, and, in turn, the frequency-dependent element matrices are derived. The relationships between the dynamic stiffness matrix and the frequency-dependent element matrices are defined. Numerical examples show that this method gives more accurate results than those obtained using the conventional static shape function based element matrices.

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