Spillover Phenomenon in Quadratic Model Updating
نویسندگان
چکیده
Model updating concerns the modification of an existing but inaccurate model with measured data. For models characterized by quadratic pencils, themeasured data usually involve incomplete knowledge of natural frequencies, mode shapes, or other spectral information. In conducting the updating, it is often desirable tomatch only the part of observed data without tampering with the other part of unmeasured or unknown eigenstructure inherent in the originalmodel. Such anupdating, if possible, is said to haveno spillover. This paper studies the spillover phenomenon in the updating of quadratic pencils. In particular, it is shown that an updatingwith no spillover is always possible for undamped quadratic pencils, whereas spillover for damped quadratic pencils is generally unpreventable.
منابع مشابه
The Spill-over Phenomenon in Quadratic Model Updating
Model updating concerns the modification of an existing but inaccurate model with measured data. For models characterized by quadratic pencils, the measured data usually involve incomplete knowledge of natural frequencies, mode shapes, or other spectral information. In conducting the updating, it is often desirable to match only the part of observed data without tampering with the other part of...
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