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    On computing eigensolution sensitivity data using free vibration solutions (1987)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: A simplified method of computing eigensolution sensitivity derivatives in structural dynamics is developed. It is shown that if the elements of stiffness and mass matrices associated with a design variable are homogeneous functions of that design variable, then eigenvalue derivatives can be computed from element strain and kinetic energies. Furthermore, if cross-mode energies are known, eigensolution derivatives of modified systems can be computed approximately using assume mode reanalysis formulation. A ten bar truss example is used to illustrate the present formulations.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA. Langley Research Center Sensitivity Analysis in Engineering; p 233-245
    Format: application/pdf
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