Patent ID: 7315798

Claim:
A computer implemented method of identifying a boundary condition between components of an object subjected to finite-element analysis, said object including a plurality of components, and having a plurality of elements positioned between the plurality of components, the method comprising the steps of: calculating in an arithmetic device a plurality of calculated mode vectors, and natural frequencies or resonance frequencies of a plurality of components of the object said calculating step including executing a computer implemented finite-element method model of the object to indicate a boundary condition between the plurality of components of the object; extracting an extracted, calculated mode vector of the plurality of calculated mode vectors having a degree of correlation at or above a predetermined threshold, said degree of correlation being relative to an experimental mode vector obtained in an experiment, said extracting step includes reducing a number of the plurality of calculated mode vectors by filtering said plurality of calculated mode vectors using at least one of order ratio filtering, component comparison filtering and frequency filtering; and identifying the boundary condition of the elements based on the extracted, calculated mode vector and the natural frequency or the resonance frequency corresponding to the extracted, calculated mode vector.