Abstract: From the viewpoint of the
classical isolation theory of two symmertical planes, the
coupling characteristics among subsystems is studied. Then, by
applying the matrix perturbation theory, the first and second
order terms for the natural frequencies and modal vectors are
derived. A practical engineering example is given showing the
reference values of the change of natural frequencies.
Key words:
Stiffness matrix Mass matrix Eigen
equation Isolation Perturbation
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