A study on the nonlinear normal modes of rotors

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J. Ocean Eng. Technol. 1996;10(1):17-24.

회전체의 비선형 정규 모우드에 관한 연구

김용철

영남대학교 기계공학과

Keywords: Nonlinear Nomal Modes, Nonlinear Rotor System, Modal Dynamics, Center Manifold Reduction, Nonlinear Elastic Supports

Abstract

In the present paper nonlinear normal modes of a rotor system is studied. The methodology to obtain the nonlinear normal modes is based on center manifold reduction technique. It also provides a way of nonlinear coordinate transform from the physical cordinates to the modal coordinates and an idea of individual nonlinear modal dynamics. In order to apply the present method to a rotor dynamics a single mass rotor system on nonlinear elastic supports is employed and the nonlinear normal modes of the system are obtained.

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