Release Time:2022-07-05  Hits:

Date of Publication: 2004-01-01

Journal: 振动工程学报

Institution: 运载工程与力学学部

Issue: 4

Page Number: 427-432

ISSN: 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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