A Correlation Improvement Technique for Model Updating of Structures
Altunel, Fatih and Celik, Mehmet and Caliskan, Mehmet
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Abstract
This study proposes a new correlation improvement technique for the
optimum node removal location to get improved modal assurance criterion
(MAC) matrix. The technique is applied to updating of the finite element
model (FEM) of a structure. The developed routine is tried on a utility
helicopter. It is proven that it is capable of showing better
performance than the coordinate MAC (coMAC), commonly used in such
analyses. Commercial software is utilized for the finite element
analysis of the heliccopter fuselage and tail. Experimental modal
analyses are also performed for updating the model for tail of the
helicopter to demonstrate the effectiveness of the new technique.... Show more Show less