Model Updating for Systems with General Proportional Damping Using Complex FRFs

THE MODEL UPDATING OF MASS, DAMPING AND STIFFNESS MATRICES

Computation of a Damping Matrix for Finite Element Model Updating

The characterization of damping is important in making accurate predictions of both the true response and the frequency response of any device or structure dominated by energy dissipation. The process of modeling damping matrices and experimental verification of those is challenging because damping can not be determined via static tests as can mass and stiffness. Furthermore, damping is more di...

Frf-based Finite Element Model Updating Method for Non-viscous and Non-proportional Damped System

The modeling of damping is very complex and still considered somewhat an unknown or grey area. Recently, model updating methods has been used to update the damping matrix based on measured dynamic test data to accurately represent energy dissipation mechanism in dynamic systems. Most of the finite element updating methods considers that the dynamic systems are viscous and proportional. In this ...

the model updating of mass, damping and stiffness matrices

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The direct updating of damping and gyroscopic matrices using incomplete complex test data

In this paper we develop an efficient numerical method for the finite-element model updating of damped gyroscopic systems based on incomplete complex modal measured data. It is assumed that the analytical mass and stiffness matrices are correct and only the damping and gyroscopic matrices need to be updated. By solving a constrained optimization problem, the optimal corrected symmetric damping ...