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Shock and Vibration
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Special Issues
Shock and Vibration
/
2015
/
Article
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Tab 2
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Research Article
Nonlinear Regression Based Health Monitoring of Hysteretic Structures under Seismic Excitation
Table 2
Estimations of preyielding stiffness [KN/m] and viscous damping coefficient [KN
s/m].
ā
Mean
Mean error
St. d.
95% confidence interval
True value
Preyielding stiffness
27335
0.1%
271
27263, 27407
27300
Viscous damping coefficient
482
7.5%
108
453, 510
521