AN ACCURATE SERIES EXPANSION METHOD FOR CALCULATING EIGENVECTOR SENSITIVITY OF NON PROPOTIONAL VISCO-DAMPING STRUCTURES

The contribution of high-frequency modes to eigenvector sendtivity of non proportional visco-damping strictures is expressed by the low-frequency modes and the system matrixes. An accurate series expansion method for calculating eigenvector sensitivity of non proportional visco-damping structures is established in which the calculation preciaion is improved greatly. Numerical examples Show that the method is correct and efficient.