Correlation and Error Localization: Analytical versus Experimental Dynamics of a Large Structural Assembly

Correlation and Error Localization: Analytical versus Experimental Dynamics of a Large Structural Assembly

Marquart, H.

De Klerk, D. (mentor)

Mechanical, Maritime and Materials Engineering

Precision and Microsystems Engineering

2013-09-17

In the high tech industry the performance of a system generally depends heavily on the system’s structural dynamic behaviour. Relatively small resonating components can alter the dynamics of the assembly significantly. Due to the presence of many small components and limited test resources it is often difficult to find the disruptor. In this report a procedure is proposed to trace a relatively small resonating component of a large structural assembly. It is based on correlation of analytical, finite element method (FEM), and experimental modal analysis data, specifically by using objective functions. No additional measurements are required; the entire procedure is performed with FEM calculations. The proposed localization procedure is applied to different configurations of a specially designed and manufactured structural assembly. The test results illustrate a successful localization of the resonating component for the investigated configurations. The complexity of the investigated structural assembly could be increased in further researches, since the procedure proved to be robust.

model analysis
correlation
error localization
assembly
objective function

http://resolver.tudelft.nl/uuid:5c7757c3-a6e6-4b6c-9e8e-cc9f62225152

2014-01-01

Student theses

master thesis

(c) 2013 Marquart, H.