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Date of Publication:2004-01-01

Journal:振动工程学报

Affiliation of Author(s):运载工程与力学学部

Issue:4

Page Number:427-432

ISSN No.:1004-4523

Abstract:This paper focuses on the nonlinear dynamic systems which have ill-conditioned stiffness matrix. Because some higher accurate methods are out of work in these problems, a method which can eliminate the ill-condition and singularity through a equivalence transformation is proposed. After changing the original dynamic system to general nonlinear system by Hamilton criterion, a satisfactory numerical solutions for a rotor system with multi degrees of freedom supports contained nonlinear fluid film bearings by segmented-direct-integration algorithm are obtained. Also, it can deal with general stiffness problems effectively.

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