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Title: Metrics for the Comparison of Acceleration Time Histories
A decomposition is used to express the mean squared deviation, quantifying the dissimilarities between time histories of input (or response) quantities of multiple replicas of a soil system centrifuge test, as a unique aggregate of three discrepancy measures associated with shape, phase and frequency-shift. The shape measure quantifies the deviations associated with dissimilarities in form and amplitude. The phase measure estimates the deviations associated with differences in phase angle. The frequency-shift measure quantifies the deviations associated with differences in frequency components. These measures are illustrated using simple synthetic motions and used to assess the discrepancies among six replicas of centrifuge input motion achieved at six different facilities. The conducted analysis shows that the proposed decomposition accurately quantifies the different types of discrepancies in input or response time histories.  more » « less
Award ID(s):
1635307 1635040
PAR ID:
10041304
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Geoteh
Page Range / eLocation ID:
215 to 224
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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