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http://dx.doi.org/10.5050/KSNVE.2012.22.12.1243

Updating of Finite Element Models Including Damping  

Lee, Gun-Myung (Engineering Research Institute, Gyeongsang National University)
Ju, Young-Ho (Doosan Heavy Industries and Construction)
Park, Mun-Soo (Jinju Campus, Korea Polytechnic VII College)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.22, no.12, 2012 , pp. 1243-1249 More about this Journal
Abstract
Finite element models are updated in two stages in this paper. In the first stage, damping is neglected, and mass and stiffness matrices of a finite element model are updated using an optimization technique. The objective function for optimization consists of natural frequencies and mode shapes obtained from experimental modal testing data and finite element analysis. In the second stage, damping is considered with the mass and stiffness matrices fixed. A damping matrix is estimated assuming a proportional damping system. Then the damping matrix is adjusted using an optimization process so that the difference between the analytical and measured frequency response functions becomes minimum. This procedure of model updating has been applied to a simulated system and an experimental cantilever beam.
Keywords
Model Updating; Finite Element Analysis; Damping; Optimization; Proportional Damping;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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