A statistical analysis of modal parameters for uncertainty quantification in structural dynamics
Pape, D. A. and Adhikari, S.
26th International Modal Analysis Conference
(IMAC-XXVI), Orlando, Florida, USA, February 2007.
This paper presents modal parameters which have been extracted
from frequency response data from one hundred nominally identical
systems. The experimental setup used is a fixed-fixed beam
arrangement, with multiple randomly placed masses added to
simulate mass matrix errors, published by Adhikari et. al. [1].
In that work, they present the probabilistic characteristics of
the amplitude and phase of the measured frequency response
functions. These FRFs are discussed in the low, medium and high
frequency ranges. In the current paper the previous work is
extended to include modal parameters estimated from each of the
one hundred sets of frequency response data. Statistical
information, including mean and standard deviation are compiled
and discussed for the low frequency (up to 1000 Hz) range. The
results obtained in this work may prove useful in uncertainty
quantification investigations.
BiBTeX Entry
@INPROCEEDINGS{cp31,
AUTHOR={D. A. Pape and S. Adhikari},
TITLE={A statistical analysis of modal parameters for uncertainty quantification in structural dynamics},
BOOKTITLE={Proceedings of the 26th International Modal Analysis Conference (IMAC-XXVI)},
YEAR={2008},
Address={Orlando, Florida, USA},
Month={February},
Note={}
}
by Sondipon Adhikari