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- W23877057 abstract "A system with non-classical damping gives has complex eigenvalues and eigenvectors. To solve such systems use is normally made of the state space formulation but this leads to a doubling in the number of degrees of freedom. In this paper a perturbation method is developed which expresses mode shape and eigenvalues in terms of the solutions to the undamped problem. The criteria for the validity of the expansions are derived and it is shown that the expansion is appropriate for many systems of practical interest. A number of comparisons of perturbation and exact solution are presented." @default.
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- W23877057 date "1999-03-01" @default.
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- W23877057 title "Use of perturbation analysis for complex modes" @default.
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