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    Nonlinear effect on modal data analysis method (1983)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: How the presence of nonlinearities in structural test data can be detected when using modern linear modal data analysis methods is discussed. The extent to which linear algorithms can provide useful information on nonlinear systems was discussed. The modal data analysis method successfully identified the frequency components (but not damping) of the true solution of a nonlinear systems. It was found that the approximate modal parameters of the linear system can be identified by the modal method when low levels of nonlinearities are present. The modal method successfully identified the modal parameters of a linear mode in the presence of a nonlinear response.
    Keywords: STRUCTURAL MECHANICS
    Type: Structural Dyn. and Control of Large Space Struct., 1982; p 135-140
    Format: application/pdf
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